Friend asked if I can cast an RC sailboat keel bulb for him. He had a 3D model and I've done a few of these in the past. Mostly lost wax in plaster but this gave me an opportunity to mess around with 3D printed patterns and use the kiln in anger. The 3D model was a mess but I got it into Fusion360 and manipulated enough to make a split pattern of the keel bulb. Plan is to clean these up and use them to make a plaster split mold. Next - a good coat of filler primer and a little sanding.