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It is a shame when people demanding tolerance, have no tolerance
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Originally posted by blackpowdershooter30 View PostI have a lathe and just bought a mill just getting some tooling and some time and I'll be starting my m3a1 anti tank gun in 37 Oo rah
It sould be more like a suomi but with a modern trigger housing, rails on top and a nice hand guard. the suomi trigger and firing group sucks.
It is a shame when people demanding tolerance, have no tolerance
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Originally posted by camper4lyfe View PostThose micrometer threads are usually in the 1/4-80 range. They're fine but not too fine. We use them on interferometer stages quite a bit.
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Originally posted by Tony View Post
American standard micrometer threads are 40 TPI (threads per inch). If you are chasing (cutting) the threads yourself any number of threads can go on any diameter. Of course you will have to chase internal threads to make a nut that fits.
https://www.newport.com/f/thread-mat...ustment-screwsOld enough to know better, still too young to care
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camper, the link you provided lists "thread matched adjustment screws" at 80 or 100 TPI. Sorry Bud but they aren't American std. micrometer thds., they're adjustment screws. But you knew that.
At the bottom left corner of the page are micrometer heads. The threads they list are .5mm pitch or 50.8 TPI. The pitch listed is METRIC. Again, not American standard micrometer threads.
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IMO get one of those thread gauges. they are inexpensive and worth every penny.
with very fine threads things get tricky very fast. I can only do them relatively decent with the finest carbide tips available.
It is a shame when people demanding tolerance, have no tolerance
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