Office of Steam Forum for Model & Toy Steam Gas & Hot Air Engines

I had discovered 3D modeling, and had created a model for the green twin oscillator that I built.
My buddy in Canada found a 3D printing place in a nearby city, and so he sent my 3D model to them, and they printed it, and sent the pattern to me.

This is the pattern I received, and I was most impressed with it.
I did not know how to add draft angle in Solidworks at the time, and so I had to glue some wood onto the outside of the rim, and sand it down a bit.