Providing the lathe dog or whatever you are using to keep the work from turning when working between centers goes back in the exact same place it was when you cut the thread, and is not removed from the work, you should have no problem. Leave the half nuts closed on the LS, and leave all the gears engaged while the work is being checked. Move only the TS; change nothing else.
Even holding the work in the chuck, if you move only the TS to check the thread, and don't take the work out of the chuck, you should be OK.
The key here is to keep the Carriage, tool point, Spindle, work, and LS in the same relationship throughout. Both before and after.
Mert
On 06/06/15, acoe@att.net [7x12minilathe] <7x12minilathe@yahoogroups.com> wrote:
Cutting some external threads. Short piece and the only way I could set up to get the cutting tool in position (to avoid hitting the chuck jaws) was to mount between two centers. So, how to test fit?
Can I pull the tailstock back to test fit, then put tailstock back in position and cut some more? Do I have to make sure the work piece is in the same relative position to the faceplate? Or, other technique? Or, is it a "no can do"?
Posted by: Mert <mertbaker@verizon.net>
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