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27th June 2013, 10:07 PM #1
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Cutting 19tpi on a atm260 (1/4 bsp)
Hi
Has anybody worked out how to cut this pitch on a 260 atm, i have the imperial conversion gear wheels, but hey only give 18 or 20tpi
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27th June 2013, 10:35 PM #2
Mechanical Butcher
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As BSP threads are usually short and tapered, would a die held in the tailstock do?
Jordan
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27th June 2013, 11:33 PM #3
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Yes it probably will, but I don't have one
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28th June 2013, 12:01 PM #4
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Hi tore,
If the thread you need to cut is only for a pipe fitting I would just set your gear train to cut a metric pitch of 1.3mm.
The pitch error over 1/2" or so should be 3/5th of bugger all.
Cheers,
Greg.
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