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I with the rack hob method and I admire the hollow cutter and mandrel approach. Here in the UK, involute gear cutters very expensive if you only going to make a few gears. There is a good explanation here http://www.jeffree.co.uk/pages/multi-tooth-gear-cutter.htm as how to make the tool. Peter

Terry, I have just cut a 50 tooth helical 0.7 mod gear. I used the approach and information from here:- http://homepage.ntlworld.com/peter_harrison/workshop/gearcutting/ Peter

Hi, Just spent the last week finishing off the operational conversion of a 250. Now have axes, Turret and spindle all sorted. Just connected the air so that can open and shut the chuck and spray coolant. The machine was one somebody tried to convert and got to complex/complicated. Unfortunately...