That's the email I got upon entering the shop today. I was using a 1 x 10 styli for a part with 3-48 & 6-32 threaded holes. Just trying to get a decent location within tolerance of +/- .005. Now, the customer (we are the sub-contractor) is "coming in today with a cylindrical probe which will take more accurate hits on thread holes". I checked some of the postings in the forum and it looks like there's a lot involved and the results are sketchy.
I hate to throw a wrench into this thread, but I can give an example for why each and every method has it's inaccuracy's, from why pitch/auto circle is flawed to why threaded posts will be pulled one way or another. The hole must be BORED and the thread fabricated using a THREAD MILL to produce the most accurate location, yet a burr from the thread mill will skew any attempt at using the auto feature to check location of the thread. I could go on and on.
I hate to throw a wrench into this thread, but I can give an example for why each and every method has it's inaccuracy's, from why pitch/auto circle is flawed to why threaded posts will be pulled one way or another. The hole must be BORED and the thread fabricated using a THREAD MILL to produce the most accurate location, yet a burr from the thread mill will skew any attempt at using the auto feature to check location of the thread. I could go on and on.
