diff --git a/OSCADSharp/OSCADSharp.ConsoleTests/Program.cs b/OSCADSharp/OSCADSharp.ConsoleTests/Program.cs
index 4b37052..9e1edc4 100644
--- a/OSCADSharp/OSCADSharp.ConsoleTests/Program.cs
+++ b/OSCADSharp/OSCADSharp.ConsoleTests/Program.cs
@@ -13,8 +13,7 @@ namespace OSCADSharp.ConsoleTests
     {
         static void Main(string[] args)
         {
-            var obj = new Cube(5, 5, 20)
-                .Translate(30, 0, 0).Rotate(0, 90, 0).Scale(2, 2, 2);
+            var obj = new Text3D("BBBB", 16);
 
             var pos = obj.Position();
             var cyl1 = new Cylinder(1, 100, true).Translate(pos);
@@ -22,7 +21,10 @@ namespace OSCADSharp.ConsoleTests
             var cyl3 = new Cylinder(1, 100, true).Rotate(90, 0, 0).Translate(pos);
             var axisHelper = cyl1.Union(cyl2, cyl3).Color("Red");
 
-            string script = obj.Union(axisHelper).ToString();
+            var topCorner = new Sphere().Translate(obj.Bounds().TopRight);
+            var botCorner = new Sphere().Translate(obj.Bounds().BottomLeft);
+
+            string script = (obj + topCorner + botCorner).ToString();
 
             File.WriteAllLines("test.scad", new string[] { script.ToString() });
             //Console.ReadKey();
diff --git a/OSCADSharp/OSCADSharp.UnitTests/Solids/CubeTests.cs b/OSCADSharp/OSCADSharp.UnitTests/Solids/CubeTests.cs
index 06c768d..abf63a4 100644
--- a/OSCADSharp/OSCADSharp.UnitTests/Solids/CubeTests.cs
+++ b/OSCADSharp/OSCADSharp.UnitTests/Solids/CubeTests.cs
@@ -85,5 +85,23 @@ namespace OSCADSharp.UnitTests
 
             Assert.AreEqual(new Vector3(-5, 0, -15), cube.Position());
         }
+
+        [TestMethod]
+        public void Cube_BoundsAreInExpectedPositionNotCentered()
+        {
+            var obj = new Cube(5, 5, 20, false);
+
+            Assert.AreEqual(new Vector3(5, 5, 20), obj.Bounds().TopRight);
+            Assert.AreEqual(new Vector3(), obj.Bounds().BottomLeft);
+        }
+
+        [TestMethod]
+        public void Cube_BoundsAreInExpectedPositionCentered()
+        {
+            var obj = new Cube(5, 5, 20, true);
+
+            Assert.AreEqual(new Vector3(2.5, 2.5, 10), obj.Bounds().TopRight);
+            Assert.AreEqual(new Vector3(-2.5, -2.5, -10), obj.Bounds().BottomLeft);
+        }
     }
 }
diff --git a/OSCADSharp/OSCADSharp.UnitTests/Solids/CylinderTests.cs b/OSCADSharp/OSCADSharp.UnitTests/Solids/CylinderTests.cs
index 78396c5..b1acbce 100644
--- a/OSCADSharp/OSCADSharp.UnitTests/Solids/CylinderTests.cs
+++ b/OSCADSharp/OSCADSharp.UnitTests/Solids/CylinderTests.cs
@@ -39,5 +39,23 @@ namespace OSCADSharp.UnitTests
 
             Assert.AreEqual(new Vector3(), cylinder.Position());
         }
+
+        [TestMethod]
+        public void Cylinder_BoundsAreInExpectedPositionNotCentered()
+        {
+            var obj = new Cylinder(5, 20);
+
+            Assert.AreEqual(new Vector3(2.5, 2.5, 20), obj.Bounds().TopRight);
+            Assert.AreEqual(new Vector3(-2.5, -2.5, 0), obj.Bounds().BottomLeft);
+        }
+
+        [TestMethod]
+        public void Cylinder_BoundsAreInExpectedPositionCentered()
+        {
+            var obj = new Cylinder(5, 20, true);
+
+            Assert.AreEqual(new Vector3(2.5, 2.5, 10), obj.Bounds().TopRight);
+            Assert.AreEqual(new Vector3(-2.5, -2.5, -10), obj.Bounds().BottomLeft);
+        }
     }
 }
diff --git a/OSCADSharp/OSCADSharp.UnitTests/Solids/SphereTests.cs b/OSCADSharp/OSCADSharp.UnitTests/Solids/SphereTests.cs
index f49acc8..2cc55d3 100644
--- a/OSCADSharp/OSCADSharp.UnitTests/Solids/SphereTests.cs
+++ b/OSCADSharp/OSCADSharp.UnitTests/Solids/SphereTests.cs
@@ -77,5 +77,14 @@ namespace OSCADSharp.UnitTests
 
             Assert.AreEqual(new Vector3(), sphere.Position());
         }
+
+        [TestMethod]
+        public void Sphere_BoundsAreInExpectedPositionCentered()
+        {
+            var obj = new Sphere(30);
+
+            Assert.AreEqual(new Vector3(15, 15, 15), obj.Bounds().TopRight);
+            Assert.AreEqual(new Vector3(-15, -15, -15), obj.Bounds().BottomLeft);
+        }
     }
 }
diff --git a/OSCADSharp/OSCADSharp.UnitTests/Solids/Text3DTests.cs b/OSCADSharp/OSCADSharp.UnitTests/Solids/Text3DTests.cs
index e8ebcf3..429593c 100644
--- a/OSCADSharp/OSCADSharp.UnitTests/Solids/Text3DTests.cs
+++ b/OSCADSharp/OSCADSharp.UnitTests/Solids/Text3DTests.cs
@@ -18,5 +18,14 @@ namespace OSCADSharp.UnitTests
 
             Assert.AreEqual(new Vector3(), text.Position());
         }
+
+        [TestMethod]
+        public void Text_BoundsBasedOnFontSize()
+        {
+            var obj = new Text3D("BBBB", 16);
+
+            Assert.AreEqual(new Vector3(32, 8, 0.5), obj.Bounds().TopRight);
+            Assert.AreEqual(new Vector3(-32, -8, -0.5), obj.Bounds().BottomLeft);
+        }
     }
 }
diff --git a/OSCADSharp/OSCADSharp/Solids/Cube.cs b/OSCADSharp/OSCADSharp/Solids/Cube.cs
index 3f45dec..60d87a0 100644
--- a/OSCADSharp/OSCADSharp/Solids/Cube.cs
+++ b/OSCADSharp/OSCADSharp/Solids/Cube.cs
@@ -113,7 +113,15 @@ namespace OSCADSharp.Solids
         /// <returns></returns>
         public override Bounds Bounds()
         {
-            throw new NotImplementedException();
+            if(Center == false)
+            {
+                return new Bounds(new Vector3(), new Vector3(this.Size.X, this.Size.Y, this.Size.Z));
+            }
+            else
+            {
+                return new Bounds(new Vector3(-this.Size.X / 2, -this.Size.Y / 2, -this.Size.Z / 2), 
+                                  new Vector3(this.Size.X / 2, this.Size.Y / 2, this.Size.Z / 2));
+            }
         }
         #endregion
     }
diff --git a/OSCADSharp/OSCADSharp/Solids/Cylinder.cs b/OSCADSharp/OSCADSharp/Solids/Cylinder.cs
index 4e4a150..b06c754 100644
--- a/OSCADSharp/OSCADSharp/Solids/Cylinder.cs
+++ b/OSCADSharp/OSCADSharp/Solids/Cylinder.cs
@@ -174,7 +174,16 @@ namespace OSCADSharp.Solids
         /// <returns></returns>
         public override Bounds Bounds()
         {
-            throw new NotImplementedException();
+            if(this.Center == false)
+            {
+                return new Bounds(new Vector3(-this.Radius, -this.Radius, 0), 
+                                  new Vector3(this.Radius, this.Radius, this.Height));
+            }
+            else
+            {
+                return new Bounds(new Vector3(-this.Radius, -this.Radius, -this.Height / 2),
+                                  new Vector3(this.Radius, this.Radius, this.Height / 2));
+            }
         }
         #endregion
     }
diff --git a/OSCADSharp/OSCADSharp/Solids/Sphere.cs b/OSCADSharp/OSCADSharp/Solids/Sphere.cs
index cf9f083..9fd82e4 100644
--- a/OSCADSharp/OSCADSharp/Solids/Sphere.cs
+++ b/OSCADSharp/OSCADSharp/Solids/Sphere.cs
@@ -106,7 +106,8 @@ namespace OSCADSharp.Solids
         /// <returns></returns>
         public override Bounds Bounds()
         {
-            throw new NotImplementedException();
+            return new Bounds(new Vector3(-this.Radius, -this.Radius, -this.Radius), 
+                              new Vector3(this.Radius, this.Radius, this.Radius));
         }
         #endregion
     }
diff --git a/OSCADSharp/OSCADSharp/Solids/Text3D.cs b/OSCADSharp/OSCADSharp/Solids/Text3D.cs
index 3a507b9..9f07cf1 100644
--- a/OSCADSharp/OSCADSharp/Solids/Text3D.cs
+++ b/OSCADSharp/OSCADSharp/Solids/Text3D.cs
@@ -144,11 +144,18 @@ namespace OSCADSharp.Solids
 
         /// <summary>
         /// Returns the approximate boundaries of this OpenSCAD object
+        /// 
+        /// Disclaimer:  The bounds for text are particularly inaccurate, since
+        /// OSCADSharp doesn't have all font data necessary to calculate the
+        /// boundaries for all the possible fonts that could be used
         /// </summary>
         /// <returns></returns>
         public override Bounds Bounds()
         {
-            throw new NotImplementedException();
+            double fontSize = this.Size ?? 8;
+            double xAmount = fontSize * this.Text.Length;
+            
+            return new Bounds(new Vector3(-xAmount/2, -fontSize/2, -.5), new Vector3(xAmount / 2, fontSize / 2, .5));
         }
         #endregion
     }