Saturday, August 1, 2015
Fun With Machining
I have finished writing all thegCode I need, although machining the part is the final step, when the replacement stepper motor arrives. I had originally planned to make this part in one operation, with the legs upright.
However the height would be tight on the Sherline mill, so I have decided to make it in threee steps, which I have named prone, standing and supine, for obvious reasons.
I also had another reminder of the importance of sharp cutting tools. ScopeRoller makes a lot of 1/4"-20 and 3/8"-16 threaded holes in aluminum. My worker noticed that when making the 3/8"-16 holes, the tap produced beautiful threads, much nicer thn the 1/4"-20 tap did. The 1/4"-20 tap I have had for many years, and itr is no longer very sharp. I replaced it with a new one. Awesome!