diff --git a/applications/utilities/mesh/generation/extrude/extrudeMesh/extrudeMeshDict b/applications/utilities/mesh/generation/extrude/extrudeMesh/extrudeMeshDict
index 7ae794a6b9..3f28a53731 100644
--- a/applications/utilities/mesh/generation/extrude/extrudeMesh/extrudeMeshDict
+++ b/applications/utilities/mesh/generation/extrude/extrudeMesh/extrudeMeshDict
@@ -71,9 +71,9 @@ nLayers             10;
 
 expansionRatio      1.0;
 
-sectorCoeffs
+sectorCoeffs    //<- Also used for wedge
 {
-    axisPt      (0 0.1 -0.05);
+    point       (0 0.1 -0.05);
     axis        (-1 0 0);
     angle       360;  // For nLayers=1 assume symmetry so angle/2 on each side
 }
@@ -92,8 +92,7 @@ linearDirectionCoeffs
 linearRadialCoeffs
 {
     R               0.1;
-    // Optional inner radius
-    Rsurface        0.01;
+    Rsurface        0.01;  // Optional inner radius
 }
 
 radialCoeffs
diff --git a/applications/utilities/mesh/generation/extrude/extrudeToRegionMesh/extrudeToRegionMeshDict b/applications/utilities/mesh/generation/extrude/extrudeToRegionMesh/extrudeToRegionMeshDict
index b33f3b87f2..1ee3248583 100644
--- a/applications/utilities/mesh/generation/extrude/extrudeToRegionMesh/extrudeToRegionMeshDict
+++ b/applications/utilities/mesh/generation/extrude/extrudeToRegionMesh/extrudeToRegionMeshDict
@@ -85,9 +85,9 @@ linearNormalCoeffs
     thickness       0.05;
 }
 
-wedgeCoeffs
+sectorCoeffs    //<- Also used for wedge
 {
-    axisPt      (0 0.1 -0.05);
+    point       (0 0.1 -0.05);
     axis        (-1 0 0);
     angle       360;  // For nLayers=1 assume symmetry so angle/2 on each side
 }
@@ -100,9 +100,8 @@ linearDirectionCoeffs
 
 linearRadialCoeffs
 {
-     R              0.1;
-    // Optional inner radius
-    Rsurface        0.01;
+    R               0.1;
+    Rsurface        0.01;  // Optional inner radius
 }
 
 radialCoeffs
diff --git a/applications/utilities/mesh/generation/extrude2DMesh/extrude2DMeshDict b/applications/utilities/mesh/generation/extrude2DMesh/extrude2DMeshDict
index ce30c3e22b..05c9005223 100644
--- a/applications/utilities/mesh/generation/extrude2DMesh/extrude2DMeshDict
+++ b/applications/utilities/mesh/generation/extrude2DMesh/extrude2DMeshDict
@@ -32,9 +32,11 @@ linearDirectionCoeffs
     thickness       0.1;
 }
 
-wedgeCoeffs
+sectorCoeffs    //<- Also used for wedge
 {
-    axisPt      (0 0 0);
+    point       (0 0 0);
     axis        (1 0 0);
     angle       10;
 }
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
diff --git a/applications/utilities/mesh/generation/foamyMesh/foamyQuadMesh/foamyQuadMeshDict b/applications/utilities/mesh/generation/foamyMesh/foamyQuadMesh/foamyQuadMeshDict
index f58b1f6e38..1c4ceb5af9 100644
--- a/applications/utilities/mesh/generation/foamyMesh/foamyQuadMesh/foamyQuadMeshDict
+++ b/applications/utilities/mesh/generation/foamyMesh/foamyQuadMesh/foamyQuadMeshDict
@@ -175,14 +175,12 @@ extrusion
         thickness       0.1;
     }
 
-    wedgeCoeffs
+    sectorCoeffs    //<- Also used for wedge
     {
-        axisPt      (0 0 0);
+        point       (0 0 0);
         axis        (1 0 0);
         angle       10;
     }
-
-    thickness       0.1;
 }
 
 
diff --git a/etc/controlDict b/etc/controlDict
index 5c65b06a66..6ccf2ef39c 100644
--- a/etc/controlDict
+++ b/etc/controlDict
@@ -517,6 +517,7 @@ DebugSwitches
     exponential         0;
     extendedLeastSquares    0;
     extendedLeastSquaresVectors 0;
+    extrudeModel        1;
     face                0;
     faceAreaPair        0;
     faceCoupleInfo      0;
diff --git a/etc/templates/axisymmetricJet/system/extrudeMeshDict b/etc/templates/axisymmetricJet/system/extrudeMeshDict
index 368750d8d1..4b43a195ce 100644
--- a/etc/templates/axisymmetricJet/system/extrudeMeshDict
+++ b/etc/templates/axisymmetricJet/system/extrudeMeshDict
@@ -24,9 +24,9 @@ extrudeModel    wedge;
 
 sectorCoeffs
 {
-    axisPt          (0 0 0);
-    axis            (1 0 0);
-    angle           1;
+    point       (0 0 0);
+    axis        (1 0 0);
+    angle       1;
 }
 
 flipNormals     false;
diff --git a/src/mesh/extrudeModel/cyclicSector/cyclicSector.C b/src/mesh/extrudeModel/cyclicSector/cyclicSector.C
index 2d2e65b9a3..82e0526bd7 100644
--- a/src/mesh/extrudeModel/cyclicSector/cyclicSector.C
+++ b/src/mesh/extrudeModel/cyclicSector/cyclicSector.C
@@ -48,12 +48,6 @@ cyclicSector::cyclicSector(const dictionary& dict)
 {}
 
 
-// * * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * * //
-
-cyclicSector::~cyclicSector()
-{}
-
-
 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
 } // End namespace extrudeModels
diff --git a/src/mesh/extrudeModel/cyclicSector/cyclicSector.H b/src/mesh/extrudeModel/cyclicSector/cyclicSector.H
index 86d99e1385..3f3c0854cc 100644
--- a/src/mesh/extrudeModel/cyclicSector/cyclicSector.H
+++ b/src/mesh/extrudeModel/cyclicSector/cyclicSector.H
@@ -27,6 +27,8 @@ Class
 Description
     Extrudes a sector.
 
+    Uses the sectorCoeffs dictionary.
+
 See also
     Foam::extrudeModels::sector
 
@@ -52,7 +54,6 @@ class cyclicSector
 :
     public sector
 {
-
 public:
 
     //- Runtime type information
@@ -61,11 +62,11 @@ public:
     // Constructors
 
         //- Construct from dictionary
-        cyclicSector(const dictionary& dict);
+        explicit cyclicSector(const dictionary& dict);
 
 
     //- Destructor
-    virtual ~cyclicSector();
+    virtual ~cyclicSector() = default;
 };
 
 
diff --git a/src/mesh/extrudeModel/extrudeModel/extrudeModel.C b/src/mesh/extrudeModel/extrudeModel/extrudeModel.C
index cb041871f6..98eaeae338 100644
--- a/src/mesh/extrudeModel/extrudeModel/extrudeModel.C
+++ b/src/mesh/extrudeModel/extrudeModel/extrudeModel.C
@@ -43,15 +43,12 @@ Foam::extrudeModel::extrudeModel
 :
     nLayers_(dict.lookupOrDefault<label>("nLayers", 1)),
     expansionRatio_(dict.lookupOrDefault<scalar>("expansionRatio", 1)),
-    dict_(dict),
     coeffDict_(dict.optionalSubDict(modelType + "Coeffs"))
-{}
-
-
-// * * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * * //
-
-Foam::extrudeModel::~extrudeModel()
-{}
+{
+    DebugInfo
+        << "Selected extrudeModel for " << modelType
+        << "using coeffs " << coeffDict_ << nl;
+}
 
 
 // * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
diff --git a/src/mesh/extrudeModel/extrudeModel/extrudeModel.H b/src/mesh/extrudeModel/extrudeModel/extrudeModel.H
index 0b2871b48a..b3e32aabf2 100644
--- a/src/mesh/extrudeModel/extrudeModel/extrudeModel.H
+++ b/src/mesh/extrudeModel/extrudeModel/extrudeModel.H
@@ -3,7 +3,7 @@
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
     \\  /    A nd           | Copyright (C) 2011-2015 OpenFOAM Foundation
-     \\/     M anipulation  |
+     \\/     M anipulation  | Copyright (C) 2019 OpenCFD Ltd.
 -------------------------------------------------------------------------------
 License
     This file is part of OpenFOAM.
@@ -27,6 +27,13 @@ Class
 Description
     Top level extrusion model class
 
+    Dictionary entries
+    \table
+        Property       | Description                        | Required | Default
+        nLayer         | Number of extrusion layers         | no  | 1
+        expansionRatio | Expansion ratio                    | no  | 1
+    \endtable
+
 SourceFiles
     extrudeModel.C
 
@@ -59,8 +66,6 @@ protected:
 
         const scalar expansionRatio_;
 
-        const dictionary& dict_;
-
         const dictionary& coeffDict_;
 
 
@@ -94,27 +99,30 @@ public:
 
     // Constructors
 
-        //- Construct from dictionary
-        extrudeModel(const word& modelType, const dictionary&);
+        //- Construct from dictionary for given model type
+        //  The corresponding model Coeffs dictionary must exist.
+        extrudeModel(const word& modelType, const dictionary& dict);
 
 
     // Selectors
 
         //- Select null constructed
-        static autoPtr<extrudeModel> New(const dictionary&);
+        static autoPtr<extrudeModel> New(const dictionary& dict);
 
 
     //- Destructor
-    virtual ~extrudeModel();
+    virtual ~extrudeModel() = default;
 
 
     // Member Functions
 
         // Access
 
-            label nLayers() const;
+        //- Return the number of layers
+        label nLayers() const;
 
-            scalar expansionRatio() const;
+        //- Return the expansion ratio
+        scalar expansionRatio() const;
 
 
     // Member Operators
diff --git a/src/mesh/extrudeModel/linearDirection/linearDirection.C b/src/mesh/extrudeModel/linearDirection/linearDirection.C
index fba6823022..2f65f64b46 100644
--- a/src/mesh/extrudeModel/linearDirection/linearDirection.C
+++ b/src/mesh/extrudeModel/linearDirection/linearDirection.C
@@ -57,12 +57,6 @@ linearDirection::linearDirection(const dictionary& dict)
 }
 
 
-// * * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * * //
-
-linearDirection::~linearDirection()
-{}
-
-
 // * * * * * * * * * * * * * * * * Operators * * * * * * * * * * * * * * * * //
 
 point linearDirection::operator()
@@ -72,9 +66,7 @@ point linearDirection::operator()
     const label layer
 ) const
 {
-    //scalar d = thickness_*layer/nLayers_;
-    scalar d = thickness_*sumThickness(layer);
-    return surfacePoint + d*direction_;
+    return surfacePoint + (thickness_*sumThickness(layer)) * direction_;
 }
 
 
diff --git a/src/mesh/extrudeModel/linearDirection/linearDirection.H b/src/mesh/extrudeModel/linearDirection/linearDirection.H
index 9dea108408..55dd476522 100644
--- a/src/mesh/extrudeModel/linearDirection/linearDirection.H
+++ b/src/mesh/extrudeModel/linearDirection/linearDirection.H
@@ -3,7 +3,7 @@
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
     \\  /    A nd           | Copyright (C) 2011-2015 OpenFOAM Foundation
-     \\/     M anipulation  |
+     \\/     M anipulation  | Copyright (C) 2019 OpenCFD Ltd.
 -------------------------------------------------------------------------------
 License
     This file is part of OpenFOAM.
@@ -25,7 +25,15 @@ Class
     Foam::extrudeModels::linearDirection
 
 Description
-    Extrudes by transforming points in a specified direction by a given distance
+    Extrudes by transforming points in a specified direction by the given
+    distance.
+
+    The linearDirectionCoeffs dictionary entries
+    \table
+        Property  | Description                             | Required | Default
+        direction | The extrusion direction, normalized on input | yes |
+        thickness | The extrusion thickness                 | yes |
+    \endtable
 
 \*---------------------------------------------------------------------------*/
 
@@ -67,11 +75,11 @@ public:
     // Constructors
 
         //- Construct from dictionary
-        linearDirection(const dictionary& dict);
+        explicit linearDirection(const dictionary& dict);
 
 
     //- Destructor
-    virtual ~linearDirection();
+    virtual ~linearDirection() = default;
 
 
     // Member Operators
diff --git a/src/mesh/extrudeModel/linearNormal/linearNormal.C b/src/mesh/extrudeModel/linearNormal/linearNormal.C
index d8084a4715..98e379f2bc 100644
--- a/src/mesh/extrudeModel/linearNormal/linearNormal.C
+++ b/src/mesh/extrudeModel/linearNormal/linearNormal.C
@@ -3,7 +3,7 @@
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
     \\  /    A nd           | Copyright (C) 2011-2015 OpenFOAM Foundation
-     \\/     M anipulation  |
+     \\/     M anipulation  | Copyright (C) 2019 OpenCFD Ltd.
 -------------------------------------------------------------------------------
 License
     This file is part of OpenFOAM.
@@ -46,7 +46,10 @@ linearNormal::linearNormal(const dictionary& dict)
 :
     extrudeModel(typeName, dict),
     thickness_(coeffDict_.get<scalar>("thickness")),
-    firstCellThickness_(0),
+    firstCellThickness_
+    (
+        coeffDict_.lookupOrDefault<scalar>("firstCellThickness", 0)
+    ),
     layerPoints_(nLayers_)
 {
     if (thickness_ <= 0)
@@ -56,42 +59,34 @@ linearNormal::linearNormal(const dictionary& dict)
             << exit(FatalError);
     }
 
-    coeffDict_.readIfPresent("firstCellThickness", firstCellThickness_);
-
-    if (firstCellThickness_ >= thickness_)
+    if (nLayers_ > 1 && firstCellThickness_ > 0)
     {
-        FatalErrorInFunction
-            << "firstCellThickness is larger than thickness"
-            << exit(FatalError);
-    }
+        if (thickness_ <= firstCellThickness_)
+        {
+            FatalErrorInFunction
+                << "firstCellThickness leave no room for further layers"
+                << exit(FatalError);
+        }
 
-    if (firstCellThickness_ > 0)
-    {
         layerPoints_[0] = firstCellThickness_;
 
-        for (label layerI = 1; layerI < nLayers_; layerI++)
+        for (label layer = 1; layer < nLayers_; ++layer)
         {
-            layerPoints_[layerI] =
+            layerPoints_[layer] =
                 (thickness_ - layerPoints_[0])
-                *sumThickness(layerI) + layerPoints_[0];
+                *sumThickness(layer) + layerPoints_[0];
         }
     }
     else
     {
-        for (label layerI = 0; layerI < nLayers_; layerI++)
+        for (label layer = 0; layer < nLayers_; ++layer)
         {
-            layerPoints_[layerI] = thickness_*sumThickness(layerI + 1);
+            layerPoints_[layer] = thickness_*sumThickness(layer + 1);
         }
     }
 }
 
 
-// * * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * * //
-
-linearNormal::~linearNormal()
-{}
-
-
 // * * * * * * * * * * * * * * * * Operators * * * * * * * * * * * * * * * * //
 
 point linearNormal::operator()
@@ -101,14 +96,12 @@ point linearNormal::operator()
     const label layer
 ) const
 {
-    if (layer == 0)
+    if (layer <= 0)
     {
         return surfacePoint;
     }
-    else
-    {
-        return surfacePoint + layerPoints_[layer - 1]*surfaceNormal;
-    }
+
+    return surfacePoint + layerPoints_[layer - 1]*surfaceNormal;
 }
 
 
diff --git a/src/mesh/extrudeModel/linearNormal/linearNormal.H b/src/mesh/extrudeModel/linearNormal/linearNormal.H
index 18b29151bf..0801249bc5 100644
--- a/src/mesh/extrudeModel/linearNormal/linearNormal.H
+++ b/src/mesh/extrudeModel/linearNormal/linearNormal.H
@@ -3,7 +3,7 @@
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
     \\  /    A nd           | Copyright (C) 2011-2015 OpenFOAM Foundation
-     \\/     M anipulation  |
+     \\/     M anipulation  | Copyright (C) 2019 OpenCFD Ltd.
 -------------------------------------------------------------------------------
 License
     This file is part of OpenFOAM.
@@ -27,6 +27,13 @@ Class
 Description
     Extrudes by transforming points normal to the surface by a given distance.
 
+    The linearNormalCoeffs dictionary entries
+    \table
+        Property  | Description                             | Required | Default
+        thickness | Extrusion thickness                     | yes |
+        firstCellThickness | Thickness of the first layer   | no  | 0
+    \endtable
+
 \*---------------------------------------------------------------------------*/
 
 #ifndef linearNormal_H
@@ -44,7 +51,7 @@ namespace extrudeModels
 {
 
 /*---------------------------------------------------------------------------*\
-                    Class linearNormal Declaration
+                 Class extrudeModels::linearNormal Declaration
 \*---------------------------------------------------------------------------*/
 
 class linearNormal
@@ -63,7 +70,6 @@ class linearNormal
         scalarList layerPoints_;
 
 
-
 public:
 
     //- Runtime type information
@@ -72,11 +78,11 @@ public:
     // Constructors
 
         //- Construct from dictionary
-        linearNormal(const dictionary& dict);
+        explicit linearNormal(const dictionary& dict);
 
 
     //- Destructor
-    virtual ~linearNormal();
+    virtual ~linearNormal() = default;
 
 
     // Member Operators
diff --git a/src/mesh/extrudeModel/linearRadial/linearRadial.C b/src/mesh/extrudeModel/linearRadial/linearRadial.C
index f468cecd60..161142dbde 100644
--- a/src/mesh/extrudeModel/linearRadial/linearRadial.C
+++ b/src/mesh/extrudeModel/linearRadial/linearRadial.C
@@ -48,12 +48,6 @@ linearRadial::linearRadial(const dictionary& dict)
 {}
 
 
-// * * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * * //
-
-linearRadial::~linearRadial()
-{}
-
-
 // * * * * * * * * * * * * * * * * Operators * * * * * * * * * * * * * * * * //
 
 point linearRadial::operator()
@@ -66,6 +60,7 @@ point linearRadial::operator()
     // radius of the surface
     scalar rs = mag(surfacePoint);
     vector rsHat = surfacePoint/rs;
+
     if (Rsurface_ >= 0) rs = Rsurface_;
 
     scalar r = rs + (R_ - rs)*sumThickness(layer);
diff --git a/src/mesh/extrudeModel/linearRadial/linearRadial.H b/src/mesh/extrudeModel/linearRadial/linearRadial.H
index b10e8e0e49..65b06eea4d 100644
--- a/src/mesh/extrudeModel/linearRadial/linearRadial.H
+++ b/src/mesh/extrudeModel/linearRadial/linearRadial.H
@@ -3,7 +3,7 @@
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
     \\  /    A nd           | Copyright (C) 2011 OpenFOAM Foundation
-     \\/     M anipulation  |
+     \\/     M anipulation  | Copyright (C) 2019 OpenCFD Ltd.
 -------------------------------------------------------------------------------
 License
     This file is part of OpenFOAM.
@@ -25,6 +25,14 @@ Class
     Foam::extrudeModels::linearRadial
 
 Description
+    Extrudes by transforming radially from the surface.
+
+    The linearRadialCoeffs dictionary entries
+    \table
+        Property  | Description                             | Required | Default
+        R         | The radial thickness                    | yes |
+        Rsurface  | Surface inner radius                    | no  | -1
+    \endtable
 
 \*---------------------------------------------------------------------------*/
 
@@ -41,7 +49,7 @@ namespace extrudeModels
 {
 
 /*---------------------------------------------------------------------------*\
-                           Class linearRadial Declaration
+                 Class extrudeModels::linearRadial Declaration
 \*---------------------------------------------------------------------------*/
 
 class linearRadial
@@ -62,15 +70,16 @@ public:
     // Constructors
 
         //- Construct from dictionary
-        linearRadial(const dictionary& dict);
+        explicit linearRadial(const dictionary& dict);
 
 
     //- Destructor
-    virtual ~linearRadial();
+    virtual ~linearRadial() = default;
 
 
     // Member Operators
 
+        //- Return point
         point operator()
         (
             const point& surfacePoint,
diff --git a/src/mesh/extrudeModel/offsetSurface/offsetSurface.C b/src/mesh/extrudeModel/offsetSurface/offsetSurface.C
index 435f8cca00..dc28c4b881 100644
--- a/src/mesh/extrudeModel/offsetSurface/offsetSurface.C
+++ b/src/mesh/extrudeModel/offsetSurface/offsetSurface.C
@@ -3,7 +3,7 @@
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
     \\  /    A nd           | Copyright (C) 2014 OpenFOAM Foundation
-     \\/     M anipulation  | Copyright (C) 2015-2017 OpenCFD Ltd.
+     \\/     M anipulation  | Copyright (C) 2015-2019 OpenCFD Ltd.
 -------------------------------------------------------------------------------
 License
     This file is part of OpenFOAM.
@@ -51,24 +51,16 @@ offsetSurface::offsetSurface(const dictionary& dict)
     project_(coeffDict_.lookupOrDefault("project", false))
 {
     // Read surface
-    fileName baseName(coeffDict_.lookup("baseSurface"));
-    baseName.expand();
+    fileName baseName(coeffDict_.get<fileName>("baseSurface").expand());
     baseSurfPtr_.reset(new triSurface(baseName));
 
-    // Construct search engine
-    baseSearchPtr_.reset(new triSurfaceSearch(baseSurfPtr_()));
-
     // Read offsetted surface
-    fileName offsetName(coeffDict_.lookup("offsetSurface"));
-    offsetName.expand();
+    fileName offsetName(coeffDict_.get<fileName>("offsetSurface").expand());
     offsetSurfPtr_.reset(new triSurface(offsetName));
 
-    // Construct search engine
-    offsetSearchPtr_.reset(new triSurfaceSearch(offsetSurfPtr_()));
 
-
-    const triSurface& b = baseSurfPtr_();
-    const triSurface& o = offsetSurfPtr_();
+    const triSurface& b = *baseSurfPtr_;
+    const triSurface& o = *offsetSurfPtr_;
 
     if
     (
@@ -78,10 +70,17 @@ offsetSurface::offsetSurface(const dictionary& dict)
     )
     {
         FatalIOErrorInFunction(dict)
-            << "offsetSurface " << offsetName
-            << " should have exactly the same topology as the baseSurface "
-            << baseName << exit(FatalIOError);
+            << "offsetSurface:\n    " << offsetName
+            << " has different topology than the baseSurface:\n    "
+            << baseName << endl
+            << exit(FatalIOError);
     }
+
+    // Construct search engine
+    baseSearchPtr_.reset(new triSurfaceSearch(b));
+
+    // Construct search engine
+    offsetSearchPtr_.reset(new triSurfaceSearch(o));
 }
 
 
diff --git a/src/mesh/extrudeModel/offsetSurface/offsetSurface.H b/src/mesh/extrudeModel/offsetSurface/offsetSurface.H
index 96d7db9261..731283bb19 100644
--- a/src/mesh/extrudeModel/offsetSurface/offsetSurface.H
+++ b/src/mesh/extrudeModel/offsetSurface/offsetSurface.H
@@ -3,7 +3,7 @@
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
     \\  /    A nd           | Copyright (C) 2014 OpenFOAM Foundation
-     \\/     M anipulation  |
+     \\/     M anipulation  | Copyright (C) 2019 OpenCFD Ltd.
 -------------------------------------------------------------------------------
 License
     This file is part of OpenFOAM.
@@ -29,6 +29,14 @@ Description
     have to be topologically identical i.e. one has to be an offsetted version
     of the other.
 
+    The offsetSurfaceCoeffs dictionary entries
+    \table
+        Property      | Description                         | Required | Default
+        baseSurface   | Base surface file name              | yes |
+        offsetSurface | Offset surface file name            | yes |
+        project       | Project onto offsetted surface      | no  | false
+    \endtable
+
 \*---------------------------------------------------------------------------*/
 
 #ifndef offsetSurface_H
@@ -41,16 +49,15 @@ Description
 
 namespace Foam
 {
-
+// Forward declarations
 class triSurface;
 class triSurfaceSearch;
 
-
 namespace extrudeModels
 {
 
 /*---------------------------------------------------------------------------*\
-                    Class offsetSurface Declaration
+                Class extrudeModels::offsetSurface Declaration
 \*---------------------------------------------------------------------------*/
 
 class offsetSurface
@@ -59,21 +66,22 @@ class offsetSurface
 {
     // Private data
 
-        //- surface
+        //- The base surface
         autoPtr<triSurface> baseSurfPtr_;
 
-        //- search engine
-        autoPtr<triSurfaceSearch> baseSearchPtr_;
-
-        //- offsets
+        //- The offset surface
         autoPtr<triSurface> offsetSurfPtr_;
 
-        //- search engine
+        //- The search engine
+        autoPtr<triSurfaceSearch> baseSearchPtr_;
+
+        //- The search engine
         autoPtr<triSurfaceSearch> offsetSearchPtr_;
 
-        // Whether to re-project onto offsetted surface
+        //- Project onto offsetted surface?
         const bool project_;
 
+
 public:
 
     //- Runtime type information
@@ -82,7 +90,7 @@ public:
     // Constructors
 
         //- Construct from dictionary
-        offsetSurface(const dictionary& dict);
+        explicit offsetSurface(const dictionary& dict);
 
 
     //- Destructor
diff --git a/src/mesh/extrudeModel/planeExtrusion/planeExtrusion.C b/src/mesh/extrudeModel/planeExtrusion/planeExtrusion.C
index dfcb24d10e..333bdeacda 100644
--- a/src/mesh/extrudeModel/planeExtrusion/planeExtrusion.C
+++ b/src/mesh/extrudeModel/planeExtrusion/planeExtrusion.C
@@ -56,12 +56,6 @@ plane::plane(const dictionary& dict)
 }
 
 
-// * * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * * //
-
-plane::~plane()
-{}
-
-
 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
 } // End namespace extrudeModels
diff --git a/src/mesh/extrudeModel/planeExtrusion/planeExtrusion.H b/src/mesh/extrudeModel/planeExtrusion/planeExtrusion.H
index 253b956e08..19c2901119 100644
--- a/src/mesh/extrudeModel/planeExtrusion/planeExtrusion.H
+++ b/src/mesh/extrudeModel/planeExtrusion/planeExtrusion.H
@@ -28,6 +28,8 @@ Description
     Extrudes by transforming points normal to the surface by 1 layer over
     a given distance.
 
+    Uses the linearNormalCoeffs dictionary
+
 See also
     Foam::extrudeModels::linearNormal
 
@@ -46,7 +48,7 @@ namespace extrudeModels
 {
 
 /*---------------------------------------------------------------------------*\
-                         Class plane Declaration
+                    Class extrudeModels::plane Declaration
 \*---------------------------------------------------------------------------*/
 
 class plane
@@ -62,11 +64,11 @@ public:
     // Constructors
 
         //- Construct from dictionary
-        plane(const dictionary& dict);
+        explicit plane(const dictionary& dict);
 
 
     //- Destructor
-    virtual ~plane();
+    virtual ~plane() = default;
 };
 
 
diff --git a/src/mesh/extrudeModel/radial/radial.C b/src/mesh/extrudeModel/radial/radial.C
index a27ebad2c4..0aad5dc9b9 100644
--- a/src/mesh/extrudeModel/radial/radial.C
+++ b/src/mesh/extrudeModel/radial/radial.C
@@ -49,12 +49,6 @@ radial::radial(const dictionary& dict)
 {}
 
 
-// * * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * * //
-
-radial::~radial()
-{}
-
-
 // * * * * * * * * * * * * * * * * Operators * * * * * * * * * * * * * * * * //
 
 point radial::operator()
diff --git a/src/mesh/extrudeModel/radial/radial.H b/src/mesh/extrudeModel/radial/radial.H
index 2143cde47d..5f8fef5720 100644
--- a/src/mesh/extrudeModel/radial/radial.H
+++ b/src/mesh/extrudeModel/radial/radial.H
@@ -25,6 +25,13 @@ Class
     Foam::extrudeModels::radial
 
 Description
+    Extrudes radially according to the Function1 description.
+
+    The radialCoeffs dictionary entries
+    \table
+        Property  | Description                             | Required | Default
+        R         | The radii as a Function1                | yes |
+    \endtable
 
 \*---------------------------------------------------------------------------*/
 
@@ -42,7 +49,7 @@ namespace extrudeModels
 {
 
 /*---------------------------------------------------------------------------*\
-                           Class radial Declaration
+                    Class extrudeModels::radial Declaration
 \*---------------------------------------------------------------------------*/
 
 class radial
@@ -62,11 +69,11 @@ public:
     // Constructors
 
         //- Construct from dictionary
-        radial(const dictionary& dict);
+        explicit radial(const dictionary& dict);
 
 
     //-Destructor
-    virtual ~radial();
+    virtual ~radial() = default;
 
 
     // Member Operators
diff --git a/src/mesh/extrudeModel/sector/sector.C b/src/mesh/extrudeModel/sector/sector.C
index d03c31b5ac..88302dfc6f 100644
--- a/src/mesh/extrudeModel/sector/sector.C
+++ b/src/mesh/extrudeModel/sector/sector.C
@@ -3,7 +3,7 @@
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
     \\  /    A nd           | Copyright (C) 2011-2015 OpenFOAM Foundation
-     \\/     M anipulation  |
+     \\/     M anipulation  | Copyright (C) 2019 OpenCFD Ltd.
 -------------------------------------------------------------------------------
 License
     This file is part of OpenFOAM.
@@ -46,18 +46,9 @@ addToRunTimeSelectionTable(extrudeModel, sector, dictionary);
 sector::sector(const dictionary& dict)
 :
     extrudeModel(typeName, dict),
-    axisPt_(coeffDict_.lookup("axisPt")),
-    axis_(coeffDict_.lookup("axis")),
-    angle_
-    (
-        degToRad(coeffDict_.get<scalar>("angle"))
-    )
-{}
-
-
-// * * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * * //
-
-sector::~sector()
+    refPoint_(coeffDict_.getCompat<point>("point", {{"axisPt", -1812}})),
+    axis_(coeffDict_.get<vector>("axis").normalise()),
+    angle_(degToRad(coeffDict_.get<scalar>("angle")))
 {}
 
 
@@ -93,7 +84,7 @@ point sector::operator()
     // Find projection onto axis (or rather decompose surfacePoint
     // into vector along edge (proj), vector normal to edge in plane
     // of surface point and surface normal.
-    point d = surfacePoint - axisPt_;
+    point d = surfacePoint - refPoint_;
 
     d -= (axis_ & d)*axis_;
 
diff --git a/src/mesh/extrudeModel/sector/sector.H b/src/mesh/extrudeModel/sector/sector.H
index 16efba1743..f7dbb6098c 100644
--- a/src/mesh/extrudeModel/sector/sector.H
+++ b/src/mesh/extrudeModel/sector/sector.H
@@ -3,7 +3,7 @@
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
     \\  /    A nd           | Copyright (C) 2011-2015 OpenFOAM Foundation
-     \\/     M anipulation  |
+     \\/     M anipulation  | Copyright (C) 2019 OpenCFD Ltd.
 -------------------------------------------------------------------------------
 License
     This file is part of OpenFOAM.
@@ -35,6 +35,18 @@ Description
       with extreme aspect ratio and internal faces wrong way around in
       checkMesh
 
+    The sectorCoeffs dictionary entries
+    \table
+        Property  | Description                             | Required | Default
+        point     | A point on the axis                     | yes |
+        axis      | Axis direction, normalized on input     | yes |
+        angle     | Sector angle (degrees)                  | yes |
+    \endtable
+
+Note
+    For compatibility, accepts the entry \c axisPt (1812 and earlier)
+    as equivalent to \c point.
+
 \*---------------------------------------------------------------------------*/
 
 #ifndef sector_H
@@ -50,7 +62,7 @@ namespace extrudeModels
 {
 
 /*---------------------------------------------------------------------------*\
-                         Class sector Declaration
+                    Class extrudeModels::sector Declaration
 \*---------------------------------------------------------------------------*/
 
 class sector
@@ -60,12 +72,12 @@ class sector
     // Private data
 
         //- Point on axis
-        const point axisPt_;
+        const point refPoint_;
 
-        //- Normalized direction of axis
+        //- Normalized axis direction
         const vector axis_;
 
-        //- Overall angle (radians)
+        //- Overall angle (radians), converted from degrees on input
         const scalar angle_;
 
 
@@ -77,15 +89,16 @@ public:
     // Constructors
 
         //- Construct from dictionary
-        sector(const dictionary& dict);
+        explicit sector(const dictionary& dict);
 
 
     //- Destructor
-    virtual ~sector();
+    virtual ~sector() = default;
 
 
     // Member Operators
 
+        //- Return corresponding point
         point operator()
         (
             const point& surfacePoint,
diff --git a/src/mesh/extrudeModel/sigmaRadial/sigmaRadial.C b/src/mesh/extrudeModel/sigmaRadial/sigmaRadial.C
index c0cde22834..49d46483b4 100644
--- a/src/mesh/extrudeModel/sigmaRadial/sigmaRadial.C
+++ b/src/mesh/extrudeModel/sigmaRadial/sigmaRadial.C
@@ -57,12 +57,6 @@ sigmaRadial::sigmaRadial(const dictionary& dict)
 }
 
 
-// * * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * * //
-
-sigmaRadial::~sigmaRadial()
-{}
-
-
 // * * * * * * * * * * * * * * * * Operators * * * * * * * * * * * * * * * * //
 
 point sigmaRadial::operator()
diff --git a/src/mesh/extrudeModel/sigmaRadial/sigmaRadial.H b/src/mesh/extrudeModel/sigmaRadial/sigmaRadial.H
index a7c397e199..0ec8985ea8 100644
--- a/src/mesh/extrudeModel/sigmaRadial/sigmaRadial.H
+++ b/src/mesh/extrudeModel/sigmaRadial/sigmaRadial.H
@@ -25,6 +25,15 @@ Class
     Foam::extrudeModels::sigmaRadial
 
 Description
+    Extrudes into sphere with grading according to pressure (atmospherics)
+
+    The sigmaRadialCoeffs dictionary entries
+    \table
+        Property  | Description                             | Required | Default
+        RTbyg     |                                         | yes |
+        pRef      |                                         | yes |
+        pStrat    |                                         | yes |
+    \endtable
 
 \*---------------------------------------------------------------------------*/
 
@@ -67,7 +76,7 @@ public:
 
 
     //-Destructor
-    virtual ~sigmaRadial();
+    virtual ~sigmaRadial() = default;
 
 
     // Member Operators
diff --git a/src/mesh/extrudeModel/wedge/wedge.C b/src/mesh/extrudeModel/wedge/wedge.C
index a5d139c1b3..2f539fe9c2 100644
--- a/src/mesh/extrudeModel/wedge/wedge.C
+++ b/src/mesh/extrudeModel/wedge/wedge.C
@@ -56,12 +56,6 @@ wedge::wedge(const dictionary& dict)
 }
 
 
-// * * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * * //
-
-wedge::~wedge()
-{}
-
-
 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
 } // End namespace extrudeModels
diff --git a/src/mesh/extrudeModel/wedge/wedge.H b/src/mesh/extrudeModel/wedge/wedge.H
index 434057589c..4c1a46ea42 100644
--- a/src/mesh/extrudeModel/wedge/wedge.H
+++ b/src/mesh/extrudeModel/wedge/wedge.H
@@ -27,6 +27,8 @@ Class
 Description
     Extrudes by rotating a surface symmetrically around axis by 1 layer.
 
+    Uses the sectorCoeffs dictionary.
+
 See also
     Foam::extrudeModels::sector
 
@@ -45,7 +47,7 @@ namespace extrudeModels
 {
 
 /*---------------------------------------------------------------------------*\
-                         Class wedge Declaration
+                    Class extrudeModels::wedge Declaration
 \*---------------------------------------------------------------------------*/
 
 class wedge
@@ -61,11 +63,11 @@ public:
     // Constructors
 
         //- Construct from dictionary
-        wedge(const dictionary& dict);
+        explicit wedge(const dictionary& dict);
 
 
     //- Destructor
-    virtual ~wedge();
+    virtual ~wedge() = default;
 };
 
 
diff --git a/tutorials/basic/overPotentialFoam/cylinder/cylinderMesh/system/extrudeMeshDict b/tutorials/basic/overPotentialFoam/cylinder/cylinderMesh/system/extrudeMeshDict
index 53b7c40025..bc373f155f 100644
--- a/tutorials/basic/overPotentialFoam/cylinder/cylinderMesh/system/extrudeMeshDict
+++ b/tutorials/basic/overPotentialFoam/cylinder/cylinderMesh/system/extrudeMeshDict
@@ -71,9 +71,9 @@ nLayers             10;
 
 expansionRatio      1.02;
 
-sectorCoeffs
+sectorCoeffs    //<- Also used for wedge
 {
-    axisPt      (0 0.1 -0.05);
+    point       (0 0.1 -0.05);
     axis        (-1 0 0);
     angle       360;  // For nLayers=1 assume symmetry so angle/2 on each side
 }
@@ -92,14 +92,13 @@ planeCoeffs
 linearDirectionCoeffs
 {
     direction       (0 1 0);
-    thickness     0.5;
+    thickness       0.5;
 }
 
 linearRadialCoeffs
 {
     R               0.1;
-    // Optional inner radius
-    Rsurface        0.01;
+    Rsurface        0.01;  // Optional inner radius
 }
 
 radialCoeffs
diff --git a/tutorials/compressible/overRhoSimpleFoam/hotCylinder/cylinderMesh/system/extrudeMeshDict b/tutorials/compressible/overRhoSimpleFoam/hotCylinder/cylinderMesh/system/extrudeMeshDict
index 46a664c2dc..473be0cfa6 100644
--- a/tutorials/compressible/overRhoSimpleFoam/hotCylinder/cylinderMesh/system/extrudeMeshDict
+++ b/tutorials/compressible/overRhoSimpleFoam/hotCylinder/cylinderMesh/system/extrudeMeshDict
@@ -44,9 +44,9 @@ nLayers             10;
 
 expansionRatio      1.02;
 
-sectorCoeffs
+sectorCoeffs    //<- Also used for wedge
 {
-    axisPt      (0 0.1 -0.05);
+    point       (0 0.1 -0.05);
     axis        (-1 0 0);
     angle       360;  // For nLayers=1 assume symmetry so angle/2 on each side
 }
@@ -65,14 +65,13 @@ planeCoeffs
 linearDirectionCoeffs
 {
     direction       (0 1 0);
-    thickness     0.5;
+    thickness       0.5;
 }
 
 linearRadialCoeffs
 {
     R               0.1;
-    // Optional inner radius
-    Rsurface        0.01;
+    Rsurface        0.01;  // Optional inner radius
 }
 
 radialCoeffs
diff --git a/tutorials/incompressible/overPimpleDyMFoam/cylinder/cylinderMesh/system/extrudeMeshDict b/tutorials/incompressible/overPimpleDyMFoam/cylinder/cylinderMesh/system/extrudeMeshDict
index 53b7c40025..bc373f155f 100644
--- a/tutorials/incompressible/overPimpleDyMFoam/cylinder/cylinderMesh/system/extrudeMeshDict
+++ b/tutorials/incompressible/overPimpleDyMFoam/cylinder/cylinderMesh/system/extrudeMeshDict
@@ -71,9 +71,9 @@ nLayers             10;
 
 expansionRatio      1.02;
 
-sectorCoeffs
+sectorCoeffs    //<- Also used for wedge
 {
-    axisPt      (0 0.1 -0.05);
+    point       (0 0.1 -0.05);
     axis        (-1 0 0);
     angle       360;  // For nLayers=1 assume symmetry so angle/2 on each side
 }
@@ -92,14 +92,13 @@ planeCoeffs
 linearDirectionCoeffs
 {
     direction       (0 1 0);
-    thickness     0.5;
+    thickness       0.5;
 }
 
 linearRadialCoeffs
 {
     R               0.1;
-    // Optional inner radius
-    Rsurface        0.01;
+    Rsurface        0.01;  // Optional inner radius
 }
 
 radialCoeffs
diff --git a/tutorials/mesh/foamyQuadMesh/OpenCFD/system/extrude2DMeshDict b/tutorials/mesh/foamyQuadMesh/OpenCFD/system/extrude2DMeshDict
index c0be7d6a73..a5ba04087e 100644
--- a/tutorials/mesh/foamyQuadMesh/OpenCFD/system/extrude2DMeshDict
+++ b/tutorials/mesh/foamyQuadMesh/OpenCFD/system/extrude2DMeshDict
@@ -31,12 +31,11 @@ linearDirectionCoeffs
     thickness       0.1;
 }
 
-wedgeCoeffs
+sectorCoeffs    //<- Also used for wedge
 {
-    axisPt          (0 0 0);
-    axis            (1 0 0);
-    angle           10;
+    point       (0 0 0);
+    axis        (1 0 0);
+    angle       10;
 }
 
-
 // ************************************************************************* //
diff --git a/tutorials/mesh/foamyQuadMesh/jaggedBoundary/system/extrude2DMeshDict b/tutorials/mesh/foamyQuadMesh/jaggedBoundary/system/extrude2DMeshDict
index c0be7d6a73..a5ba04087e 100644
--- a/tutorials/mesh/foamyQuadMesh/jaggedBoundary/system/extrude2DMeshDict
+++ b/tutorials/mesh/foamyQuadMesh/jaggedBoundary/system/extrude2DMeshDict
@@ -31,12 +31,11 @@ linearDirectionCoeffs
     thickness       0.1;
 }
 
-wedgeCoeffs
+sectorCoeffs    //<- Also used for wedge
 {
-    axisPt          (0 0 0);
-    axis            (1 0 0);
-    angle           10;
+    point       (0 0 0);
+    axis        (1 0 0);
+    angle       10;
 }
 
-
 // ************************************************************************* //
diff --git a/tutorials/mesh/foamyQuadMesh/square/system/extrude2DMeshDict b/tutorials/mesh/foamyQuadMesh/square/system/extrude2DMeshDict
index 3531c4a6e7..ba085a7520 100644
--- a/tutorials/mesh/foamyQuadMesh/square/system/extrude2DMeshDict
+++ b/tutorials/mesh/foamyQuadMesh/square/system/extrude2DMeshDict
@@ -14,18 +14,18 @@ FoamFile
 }
 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
-extrudeModel        wedge;
+extrudeModel    wedge;
 
 patchInfo
 {}
 
-patchType           wedge;
+patchType       wedge;
 
-sectorCoeffs
+sectorCoeffs    //<- Also used for wedge
 {
-    axisPt          (0 0 0);
-    axis            (1 0 0);
-    angle           10;
+    point       (0 0 0);
+    axis        (1 0 0);
+    angle       10;
 }
 
 
diff --git a/tutorials/multiphase/compressibleInterFoam/laminar/climbingRod/system/extrudeMeshDict b/tutorials/multiphase/compressibleInterFoam/laminar/climbingRod/system/extrudeMeshDict
index 1f9fa379a5..609c3e45d9 100644
--- a/tutorials/multiphase/compressibleInterFoam/laminar/climbingRod/system/extrudeMeshDict
+++ b/tutorials/multiphase/compressibleInterFoam/laminar/climbingRod/system/extrudeMeshDict
@@ -20,16 +20,17 @@ sourceCase "$FOAM_CASE";
 sourcePatches (front);
 exposedPatchName back;
 
-extrudeModel        wedge;
+extrudeModel    wedge;
 
-sectorCoeffs
+sectorCoeffs    //<- Also used for wedge
 {
-    axisPt          (0 0 0);
-    axis            (0 -1 0);
-    angle           1;
+    point       (0 0 0);
+    axis        (0 -1 0);
+    angle       1;
 }
 
 flipNormals false;
-mergeFaces false;
+
+mergeFaces  false;
 
 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
diff --git a/tutorials/multiphase/interFoam/RAS/waterChannel/system/extrudeMeshDict b/tutorials/multiphase/interFoam/RAS/waterChannel/system/extrudeMeshDict
index 60a2615d6b..92e718c52c 100644
--- a/tutorials/multiphase/interFoam/RAS/waterChannel/system/extrudeMeshDict
+++ b/tutorials/multiphase/interFoam/RAS/waterChannel/system/extrudeMeshDict
@@ -27,7 +27,6 @@ expansionRatio      1.0;
 
 linearDirectionCoeffs
 {
-    axisPt          (0 0 0);
     direction       (1 -0.2 -0.03);
     thickness       40;
 }
diff --git a/tutorials/multiphase/interFoam/RAS/waterChannel/system/extrudeMeshDict.1 b/tutorials/multiphase/interFoam/RAS/waterChannel/system/extrudeMeshDict.1
index 4a8bcb26f6..e4b9fbfa2d 100644
--- a/tutorials/multiphase/interFoam/RAS/waterChannel/system/extrudeMeshDict.1
+++ b/tutorials/multiphase/interFoam/RAS/waterChannel/system/extrudeMeshDict.1
@@ -27,7 +27,6 @@ expansionRatio      1.0;
 
 linearDirectionCoeffs
 {
-    axisPt          (0 0 0);
     direction       (1 0.2 0.02);
     thickness       60;
 }
diff --git a/tutorials/multiphase/interFoam/RAS/waterChannel/system/extrudeMeshDict.2 b/tutorials/multiphase/interFoam/RAS/waterChannel/system/extrudeMeshDict.2
index 60a2615d6b..92e718c52c 100644
--- a/tutorials/multiphase/interFoam/RAS/waterChannel/system/extrudeMeshDict.2
+++ b/tutorials/multiphase/interFoam/RAS/waterChannel/system/extrudeMeshDict.2
@@ -27,7 +27,6 @@ expansionRatio      1.0;
 
 linearDirectionCoeffs
 {
-    axisPt          (0 0 0);
     direction       (1 -0.2 -0.03);
     thickness       40;
 }