diff --git a/OSCADSharp/OSCADSharp/Internal/Bindings/IBindings.cs b/OSCADSharp/OSCADSharp/Internal/Bindings/IBindings.cs
new file mode 100644
index 0000000..66e2b34
--- /dev/null
+++ b/OSCADSharp/OSCADSharp/Internal/Bindings/IBindings.cs
@@ -0,0 +1,19 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace OSCADSharp.Bindings
+{
+    internal interface IBindings
+    {
+        void Bind<T>(T obj, string property, Variable variable);
+
+        bool Contains(string openScadFieldName);
+
+        Binding Get(string propertyName);
+
+        void Synonym(string propertyName, string alternateName);        
+    }
+}
diff --git a/OSCADSharp/OSCADSharp/Internal/Bindings/Solids/SphereBindings.cs b/OSCADSharp/OSCADSharp/Internal/Bindings/Solids/SphereBindings.cs
new file mode 100644
index 0000000..c71fc25
--- /dev/null
+++ b/OSCADSharp/OSCADSharp/Internal/Bindings/Solids/SphereBindings.cs
@@ -0,0 +1,47 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace OSCADSharp.Bindings.Solids
+{
+    internal class SphereBindings : ICloneable<SphereBindings>, IBindings
+    {
+        private Bindings bindings = new Bindings(new Dictionary<string, string>()
+        {
+            { "radius", "r" },
+            { "minimumangle", "$fa" },
+            { "minimumfragmentsize", "$fs" },
+            { "resolution", "$fn" },
+            { "diameter", "d" }
+        });        
+
+        public SphereBindings Clone()
+        {
+            return new SphereBindings() {
+                bindings = bindings.Clone()
+            };
+        }
+
+        public bool Contains(string openScadFieldName)
+        {
+            return this.bindings.Contains(openScadFieldName);
+        }
+
+        public Binding Get(string propertyName)
+        {
+            return this.bindings.Get(propertyName);
+        }
+
+        public void Synonym(string propertyName, string alternateName)
+        {
+            this.bindings.Synonym(propertyName, alternateName);
+        }
+
+        public void Bind<T>(T obj, string property, Variable variable)
+        {
+            this.bindings.Add<T>(obj, property, variable);
+        }
+    }
+}
diff --git a/OSCADSharp/OSCADSharp/Internal/ICloneable.cs b/OSCADSharp/OSCADSharp/Internal/ICloneable.cs
new file mode 100644
index 0000000..ea9f203
--- /dev/null
+++ b/OSCADSharp/OSCADSharp/Internal/ICloneable.cs
@@ -0,0 +1,13 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace OSCADSharp
+{
+    internal interface ICloneable<T>
+    {
+        T Clone();
+    }
+}
diff --git a/OSCADSharp/OSCADSharp/Internal/Scripting/StatementBuilder.cs b/OSCADSharp/OSCADSharp/Internal/Scripting/StatementBuilder.cs
index 8d7ab13..f8b3036 100644
--- a/OSCADSharp/OSCADSharp/Internal/Scripting/StatementBuilder.cs
+++ b/OSCADSharp/OSCADSharp/Internal/Scripting/StatementBuilder.cs
@@ -1,4 +1,5 @@
-using System;
+using OSCADSharp.Bindings;
+using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
@@ -14,6 +15,7 @@ namespace OSCADSharp.Scripting
     {
         private StringBuilder SB { get; set; } = new StringBuilder();
         private Bindings.Bindings bindings = null;
+        private IBindings ibindings = null;
 
         internal StatementBuilder()
         {
@@ -24,6 +26,10 @@ namespace OSCADSharp.Scripting
             this.bindings = bindings;
         }
 
+        internal StatementBuilder(IBindings ibindings)
+        {
+            this.ibindings = ibindings;
+        }
 
         /// <summary>
         /// Special append method for conditionally adding value-pairs
@@ -47,7 +53,8 @@ namespace OSCADSharp.Scripting
 
                 if(useBinding)
                 {
-                    SB.Append(this.bindings.Get(name).BoundVariable.Text);
+                    SB.Append(this.bindings?.Get(name).BoundVariable.Text);
+                    SB.Append(this.ibindings?.Get(name).BoundVariable.Text);
                 }
                 else
                 {
@@ -58,7 +65,8 @@ namespace OSCADSharp.Scripting
 
         private bool shouldUseBinding(string name)
         {
-            return this.bindings != null && this.bindings.Contains(name);
+            return (this.bindings != null && this.bindings.Contains(name))
+                || (this.ibindings != null && this.ibindings.Contains(name));
         }
 
         /// <summary>
diff --git a/OSCADSharp/OSCADSharp/OSCADSharp.csproj b/OSCADSharp/OSCADSharp/OSCADSharp.csproj
index 2b43925..5859df1 100644
--- a/OSCADSharp/OSCADSharp/OSCADSharp.csproj
+++ b/OSCADSharp/OSCADSharp/OSCADSharp.csproj
@@ -43,6 +43,9 @@
   </ItemGroup>
   <ItemGroup>
     <Compile Include="Internal\Bindings\BindableBoolean.cs" />
+    <Compile Include="Internal\Bindings\IBindings.cs" />
+    <Compile Include="Internal\Bindings\Solids\SphereBindings.cs" />
+    <Compile Include="Internal\ICloneable.cs" />
     <Compile Include="Internal\Scripting\VariableCalculator.cs" />
     <Compile Include="Internal\Scripting\CompoundVariable.cs" />
     <Compile Include="Public\Settings\Dependencies.cs" />
diff --git a/OSCADSharp/OSCADSharp/Public/Solids/Sphere.cs b/OSCADSharp/OSCADSharp/Public/Solids/Sphere.cs
index a23d780..61648e5 100644
--- a/OSCADSharp/OSCADSharp/Public/Solids/Sphere.cs
+++ b/OSCADSharp/OSCADSharp/Public/Solids/Sphere.cs
@@ -8,6 +8,7 @@ using OSCADSharp.Scripting;
 using System.Collections.Concurrent;
 using System.Reflection;
 using OSCADSharp.Bindings;
+using OSCADSharp.Bindings.Solids;
 
 namespace OSCADSharp
 {
@@ -147,15 +148,7 @@ namespace OSCADSharp
                               new Vector3(this.Radius, this.Radius, this.Radius));
         }
 
-        private Bindings.Bindings bindings = new Bindings.Bindings(new Dictionary<string, string>()
-        {
-            { "radius", "r" },
-            { "minimumangle", "$fa" },
-            { "minimumfragmentsize", "$fs" },
-            { "resolution", "$fn" },
-            { "diameter", "d" }
-        });
-
+        private SphereBindings bindings = new SphereBindings();
         /// <summary>
         /// Binds a a variable to a property on this object
         /// </summary>
@@ -164,7 +157,7 @@ namespace OSCADSharp
         /// literal value of the property</param>
         public override void Bind(string property, Variable variable)
         {
-            this.bindings.Add<Sphere>(this, property, variable);
+            this.bindings.Bind<Sphere>(this, property, variable);
         }
         #endregion
     }