NPT Internal Threads
#15
I proceeded with test cut when the requestor asked me to try with 12TPI.  But I was so scared of crashing into the chuck that I disengaged the leadscrew when I'm supposed to reverse or stop the spindle....

[Image: CF9F3874-645D-4D37-A9F0-0B82D937BF5C_zps5w4hddga.jpg]

[Image: AD46E050-9150-4030-94AD-3D437046B91C_zpsc5ebgyfk.jpg]

My lathe doesn't have a threading dial like some I saw on YouTube. The cross slide has to be engaged at all time during threading. 

Any tips on how to see if I'm at the end of the cut to stop and reverse the spindle with the threading tool backed off the part?
Wongster
http://www.wongstersproduction.com

Proud to be a member of MetalworkingFun Forum since Mar 2012.
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Messages In This Thread
NPT Internal Threads - by Wongster - 04-28-2017, 07:44 PM
RE: NPT Internal Threads - by TomG - 04-28-2017, 08:15 PM
RE: NPT Internal Threads - by Wongster - 04-28-2017, 09:11 PM
RE: NPT Internal Threads - by Vinny - 04-28-2017, 09:22 PM
RE: NPT Internal Threads - by Wongster - 04-28-2017, 10:11 PM
RE: NPT Internal Threads - by Vinny - 04-28-2017, 10:27 PM
RE: NPT Internal Threads - by Wongster - 04-28-2017, 10:48 PM
RE: NPT Internal Threads - by Vinny - 04-28-2017, 11:06 PM
RE: NPT Internal Threads - by Vinny - 04-28-2017, 11:34 PM
RE: NPT Internal Threads - by Wongster - 04-29-2017, 12:32 AM
RE: NPT Internal Threads - by Vinny - 04-29-2017, 10:36 AM
RE: NPT Internal Threads - by Wongster - 04-30-2017, 04:11 AM
RE: NPT Internal Threads - by Vinny - 04-30-2017, 10:38 AM
RE: NPT Internal Threads - by Dr Stan - 04-30-2017, 07:26 PM
RE: NPT Internal Threads - by Wongster - 05-05-2017, 03:45 AM
RE: NPT Internal Threads - by Mayhem - 05-05-2017, 05:48 AM
RE: NPT Internal Threads - by stevec - 05-05-2017, 06:17 AM
RE: NPT Internal Threads - by Mayhem - 05-05-2017, 08:18 AM
RE: NPT Internal Threads - by Vinny - 05-05-2017, 10:30 AM
RE: NPT Internal Threads - by Wongster - 05-05-2017, 11:00 AM
RE: NPT Internal Threads - by Vinny - 05-05-2017, 11:30 AM
RE: NPT Internal Threads - by Wongster - 05-05-2017, 11:40 AM
RE: NPT Internal Threads - by Wongster - 05-06-2017, 02:04 AM
RE: NPT Internal Threads - by Vinny - 05-06-2017, 10:07 AM
RE: NPT Internal Threads - by Wongster - 05-06-2017, 11:20 AM
RE: NPT Internal Threads - by Mayhem - 05-06-2017, 09:24 PM



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