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

It looks like you have to be able to drill holes and tap them. Some Lathe work but all the milling is done.
Drilling and tapping is fairly simple as long as you don’t force anything. If you force it you will break the tap possibly inside the part which can really make things tough to remove it. I typically turn no more than a quarter turn at a time when cutting threads then back up a half turn to clear the chips. Use plenty of cutting fluid or oil.