diff --git a/Geom/DemoBuildGeom.cs b/Geom/DemoBuildGeom.cs
index 9a2f0ef..a77419f 100644
--- a/Geom/DemoBuildGeom.cs
+++ b/Geom/DemoBuildGeom.cs
@@ -22,7 +22,7 @@ public static class DemoBuildGeom
 	/// <returns>A list of geometries implementing the IGetStl interface</returns>
 	public static List<IGetStl> GenGeoms()
 	{
-		box3d_t box = new box3d_t(0, 0, -50, 70, 50, 0);
+		Box3d box = new Box3d(0, 0, -50, 70, 50, 0);
 		Cylindroid cylindroid = new Cylindroid([ new PairZr(0,12),new PairZr(20,12),
 								new PairZr(20,16),new PairZr(30,16)]);
 		Stl stl = new Stl("geom.stl");
diff --git a/Machining/DemoBuildGeomOnlyMachiningProject.cs b/Machining/DemoBuildGeomOnlyMachiningProject.cs
index 1eb53d0..ef584be 100644
--- a/Machining/DemoBuildGeomOnlyMachiningProject.cs
+++ b/Machining/DemoBuildGeomOnlyMachiningProject.cs
@@ -74,7 +74,7 @@ public static class DemoBuildGeomOnlyMachiningProject
 		//geometry anchor to each mount, so the workpiece mount is placed by the
 		//transformer of the branch to it: on top of the 10 mm thick fixture geom.
 		Fixture fixture = Fixture.CreateDefault();
-		fixture.Geom = new box3d_t(new vec3d_t(-40, -40, 0), new vec3d_t(40, 40, 10));
+		fixture.Geom = new Box3d(new vec3d_t(-40, -40, 0), new vec3d_t(40, 40, 10));
 		Branch.Get(fixture.GeomAnchor, fixture.WorkpieceMount).Transformer
 			= new StaticTranslation(new vec3d_t(0, 0, 10));
 		localProjectService.Fixture = fixture;
@@ -83,7 +83,7 @@ public static class DemoBuildGeomOnlyMachiningProject
 		//mount and to program zero by zero translations.
 		Workpiece workpiece = Workpiece.CreateDefault();
 		workpiece.InitResolution = 0.25;
-		workpiece.InitGeom = new box3d_t(0, 0, -50, 70, 50, 0);
+		workpiece.InitGeom = new Box3d(0, 0, -50, 70, 50, 0);
 		workpiece.IdealGeom = null;
 		localProjectService.Workpiece = workpiece;
 
diff --git a/Machining/DemoBuildMachiningProject.cs b/Machining/DemoBuildMachiningProject.cs
index a3175f9..7bf12bc 100644
--- a/Machining/DemoBuildMachiningProject.cs
+++ b/Machining/DemoBuildMachiningProject.cs
@@ -187,7 +187,7 @@ public static class DemoBuildMachiningProject
 		//geometry anchor to each mount, so the workpiece mount is placed by the
 		//transformer of the branch to it: on top of the 10 mm thick fixture geom.
 		Fixture fixture = Fixture.CreateDefault();
-		fixture.Geom = new box3d_t(new vec3d_t(-40, -40, 0), new vec3d_t(40, 40, 10));
+		fixture.Geom = new Box3d(new vec3d_t(-40, -40, 0), new vec3d_t(40, 40, 10));
 		Branch.Get(fixture.GeomAnchor, fixture.WorkpieceMount).Transformer
 			= new StaticTranslation(new vec3d_t(0, 0, 10));
 		localProjectService.Fixture = fixture;
@@ -198,7 +198,7 @@ public static class DemoBuildMachiningProject
 		//mount and to program zero by zero translations.
 		Workpiece workpiece = Workpiece.CreateDefault();
 		workpiece.InitResolution = 0.25;
-		workpiece.InitGeom = new box3d_t(0, 0, -50, 70, 50, 0);
+		workpiece.InitGeom = new Box3d(0, 0, -50, 70, 50, 0);
 		workpiece.IdealGeom = null;
 		workpiece.CuttingPara = XFactory.GenByFile<ICuttingPara>(
 			"Resource/CuttingParameter", "Al6061T6.default.mp", progress);