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

That engine build is just  WOW and the tutorial was fascinating, but I do wish that I could have watched the other end of the fixture operate for a couple of cuts, just to get the whole picture, as I'm unclear on how the template and the follower stay in contact throughout the forward and reverse motion. A close up of your cutter would not have gone amiss either.

Wonderful to have such talented and capable folks sharing their knowledge with us here. You do explain these technical matters in a very clear and matter of fact fashion!