These are rather interesting I feel. Partly because this goon does it with only a vise, calipers, file and bench block for his metal cutting. What he turns out is quite a nice piece. Check it: jump to Part 6, Cutting for sights Part 11, Slide cuts, (by hand!) Part 14, Testing https://youtu.be/tdF8Y4_Ypvw Pretty Neat if you have time patience and a steady hand.