Originally Posted by
roundman
Roll form taps are superb. I have found where when a regular tap (cut Tap) is used it is not as strong a thread as a cut tap. Each has their advantages and disadvantages . Roll works better for most applications. They will distort the metal sure and if the spot depth is not correct then you get raised distortion of the metal which must be fixed. If it is done right it is hard to beat. Usually where the taps breakthrough I find distorted exit which looks like a raise and must he debured.
Have fun exploring, but you are responding to 5 year old posts, several of them.
Mike
Two Haas VF-2's, Haas HA5C, Haas HRT-9, Hardinge CHNC 1, Bother HS-300 Wire EDM, BobCAD V23, BobCAD V28