06-08-2021, 11:15 PM
Ed, I was just wondering if you have (or planning to get) a 21 tooth change gear for the lathe to cut metric threads? Way back when... I had to buy a standard gear blank (Boston Gear?) then bore it to fit and hand file a keyway in it. (Before I owned any broaches.) Of course these days Little Machine Shop has and sells them ready made for about 10 bucks. 
Thought it might be better to have one before you need it someday.
If you don't plan on cutting any metric threads, forget I mentioned it.
Thought it might be better to have one before you need it someday.
If you don't plan on cutting any metric threads, forget I mentioned it.
Willie