Ok, normally I can visualize things pretty well, but here's where I am having trouble.
1. How you machine a square hole in a block of aluminum?
2. How does knurling work?
3. I've seen 1/2" plate aluminum with 8-12" holes cut in them how do they cut a hole this big?
4. I haven't gotten there yet, but how you get something to .001" of tolerance? It seems to me you can't do it.
5. How do you cut a "ring" (think lathe) around a cylindrical object that is only .062" wide? Isn't that the thickness (roughly) of a bandsaw blade?
6. How do you taper? Especially on a lathe. Crank both handles at the same time?
Thanks guys