How to Calculate Bore Size

[not done it yetParticipant @notdoneityet]

A few observations/comments from here.

I don’t possess any carbide ‘thread-form’ cutters/inserts so I carry out my (limited) thread cutting with HSS.

I turn the top slide to the appropriate angle –  both less load than diving straight in and the increase in the cut is actually less than the top slide change.

Never use a steel hammer unless you don’t mind risking brinelling your bearings.

Never dismount the part from the chuck, for checking.  Remove the chuck, instead.  Even cutting a dummy thread as a test piece is better than removal of the part from the chuck.

Threading outwards (as per Hopper) obviates the risk of a crash, particularly if the thread is a blind one.

 

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