diff --git a/OSCADSharp/OSCADSharp/OSCADSharp.csproj b/OSCADSharp/OSCADSharp/OSCADSharp.csproj
index 247b532..dd4ecf6 100644
--- a/OSCADSharp/OSCADSharp/OSCADSharp.csproj
+++ b/OSCADSharp/OSCADSharp/OSCADSharp.csproj
@@ -47,6 +47,9 @@
     <Compile Include="Solids\Sphere.cs" />
     <Compile Include="Vector3.cs" />
   </ItemGroup>
+  <ItemGroup>
+    <Folder Include="Transforms\" />
+  </ItemGroup>
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
   <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
        Other similar extension points exist, see Microsoft.Common.targets.
diff --git a/OSCADSharp/OSCADSharp/Solids/Cube.cs b/OSCADSharp/OSCADSharp/Solids/Cube.cs
index 4e7407e..d390e9a 100644
--- a/OSCADSharp/OSCADSharp/Solids/Cube.cs
+++ b/OSCADSharp/OSCADSharp/Solids/Cube.cs
@@ -24,5 +24,11 @@ namespace OSCADSharp.Solids
         /// </summary>
         public bool Center { get; set; } = false;
         #endregion
+
+        public override string ToString()
+        {
+            return String.Format("cube(size = [{0}, {1}, {2}], center = {3});", 
+                this.Size.X.ToString(), this.Size.Y.ToString(), this.Size.Z.ToString(), this.Center.ToString().ToLower()); ;
+        }
     }
 }
diff --git a/OSCADSharp/OSCADSharp/Solids/Cylinder.cs b/OSCADSharp/OSCADSharp/Solids/Cylinder.cs
index 7093408..440869d 100644
--- a/OSCADSharp/OSCADSharp/Solids/Cylinder.cs
+++ b/OSCADSharp/OSCADSharp/Solids/Cylinder.cs
@@ -95,6 +95,11 @@ namespace OSCADSharp.Solids
         public int Resolution { get; set; } = 0;
         #endregion
 
-
+        public override string ToString()
+        {
+            return String.Format("cylinder($fn = {0}, $fa = {1}, $fs = {2}, h = {3}, r1 = {4}, r2 = {5}, center = {6});", 
+                Resolution.ToString(), MinimumAngle.ToString(),  MinimumCircumferentialLength.ToString(),
+                Height.ToString(), Radius1.ToString(), Radius2.ToString(), Center.ToString().ToLower());
+        }
     }
 }
diff --git a/OSCADSharp/OSCADSharp/Solids/Sphere.cs b/OSCADSharp/OSCADSharp/Solids/Sphere.cs
index 16a9724..d591c7d 100644
--- a/OSCADSharp/OSCADSharp/Solids/Sphere.cs
+++ b/OSCADSharp/OSCADSharp/Solids/Sphere.cs
@@ -20,7 +20,10 @@ namespace OSCADSharp.Solids
         /// <summary>
         /// This is the diameter of the sphere
         /// </summary>
-        public double Diameter { get; set; }
+        public double Diameter {
+            get { return this.Radius * 2; }
+            set { this.Radius = value / 2; }
+        }
         
         /// <summary>
         /// Minimum angle (in degrees) of each cylinder fragment.
@@ -29,10 +32,10 @@ namespace OSCADSharp.Solids
         public int MinimumAngle { get; set; } = 12;
 
         /// <summary>
-        /// Minimum circumferential length of each fragment.
+        /// Fragment size in mm
         /// ($fs in OpenSCAD)
         /// </summary>
-        public int MinimumCircumferentialLength { get; set; } = 2;
+        public int MinimumFragmentSize { get; set; } = 2;
 
         /// <summary>
         /// Number of fragments in 360 degrees. Values of 3 or more override MinimumAngle and MinimumCircumferentialLength
@@ -40,5 +43,12 @@ namespace OSCADSharp.Solids
         /// </summary>
         public int Resolution { get; set; } = 0;
         #endregion
+
+        public override string ToString()
+        {
+            return String.Format("sphere($fn = {0}, $fa = {1}, $fs = {2}, r = {3});", 
+                this.Resolution.ToString(), this.MinimumAngle.ToString(), 
+                this.MinimumFragmentSize.ToString(), this.Radius.ToString());
+        }
     }
 }