Thanks Dewey, filing the knuckle seems like a lot of hard work when you could use a knuckle scraper which makes the job a lot easier. I don't have CNC machines either and do most of my machining by hand. Occasionally though I do need to get something wire-cut and I find the cost to get someone to do it for you is pretty good these days. With so much machining being done in China, a lot of engineering businesses have got wire-cutters which are not booked out all week and they are happy to take on small jobs at a reasonable cost. If you make any jigs yourself this helps with the cost and the programming is not expensive as the actual machining is mostly basic straight lines and simple curves. At least the modern variable angle helix cutters make machining by hand a lot more enjoyable than it used to be without as much chatter, if any. Great work, very impressive.

Waidmannsheil.