Ah thanks. But isn't the thread pitch totally dependent on the tool bit? In school, we had blank tool bits and we had to grind them to the shape that you wanted. I guess you can purchase them precut too. But school wanted us to learn how to grind our own. Grind for a few seconds and then dip in water. Then repeat for what seems like 2000 more times.
You're thinking of thread angle which is determined by the profile of the cutter. 60° will work fine. Thread pitch is determined by your gear box setting.
According to FB its Mike's birthday. Happy birthday @mikepetro
Ah thanks. But isn't the thread pitch totally dependent on the tool bit? In school, we had blank tool bits and we had to grind them to the shape that you wanted. I guess you can purchase them precut too. But school wanted us to learn how to grind our own. Grind for a few seconds and then dip in water. Then repeat for what seems like 2000 more times.
I forgot about that, I don't think you could buy precut bits back then?? That was a challenge to learn the three different angles to get a good cutting bit. I cheated, at the start of the class we were each given one blank piece, we each had to learn to grind it correctly then it was up to us to regrind it when it needed it and it was up to us not to loose it, I asked Dad if he had a old spare
Once I had one cut right I kept that was my guide and had a second to use and recut. 
They don't offer classes like that anymore, I wish they did but as dangerous as those machines were I guess I can understand why they don't. Flesh and bone has no chance of stopping a spinning chuck on a lathe, they could rip a limb off in a second.
That is very cool you have that handed down lathe and stuff you made back then, I have no idea what happen to the things I made, that was so long ago. I do have my Dad's machinist tools and wooden tool box, I only use a couple of the tools, the rest I leave alone, the box sits in my office in memory of Dad and those wonderful days. His tool box is identical to this one, green felt, mirror, hardware, handles and all.
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Happy Birthday Mike
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