My trade is electronics, but my company has had a need for some machining work, and I've been happy to oblige. Here's what I've been doing. We had a test bed in need of repair. It has micro positioners that use collets to grab and manipulate ruby rods 0.030" in diameter. The collet closers aren't hardened, and were beaten by repeated hard closings. I cut off the tips and rebore them to the correct 25d bevel using my homemade 1/16" boring bar. One photo shows two closers, before and after machining. Also the z axis gears were stripped, so I made new ones using a homemade single point tool. Wish I had drawings to work from on those, as it was really difficult to measure the pressure angle.
http://www.photoshop.com/users/Jacko...2a99/slideshow



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