I'm working on making a small drill press vise form a kit consisting of cast iron castings. I want to use a piece of 1/2-10 Acme threaded rod for the screw.
I'm shopping for a 1/2-10 Acme tap and see 3 types of taps available - a regular tapered single pass tap, a tandem type tap, and a two piece set consisting of roughing and finishing taps.
Is there much difference in the quality of the threads each can cut? And would the cheaper single pass tapered tap be likely to thread a hole in cast iron that would be good enough to tighten a vise? Thanks!
I'm shopping for a 1/2-10 Acme tap and see 3 types of taps available - a regular tapered single pass tap, a tandem type tap, and a two piece set consisting of roughing and finishing taps.
Is there much difference in the quality of the threads each can cut? And would the cheaper single pass tapered tap be likely to thread a hole in cast iron that would be good enough to tighten a vise? Thanks!