On 11.05.18 14:28, andy pugh wrote: ... > Though, actually, what I would do is cut a slot in the top and rely on > two flats only to do the work.
That one appeals a lot from the manufacturing viewpoint. It is quicker and probably as strong as the 4 grubscrews I used in the original taphats. It took me a while to visualise that not all of the through-hole is lost, just the AF width of the tap's drive square, so the (centre)drill in the chuck can still serve to guide the taphat - the purpose of the original. The grubscrews also avoid any backlash which might be an issue in rigid tapping. (Gene uses them under CNC, IIUC - something I haven't tried.) Erik _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
