> So, I think the damage to the threads is because > I'm giving the drill-tap too much axial freedom in a home-made > spring-loaded tap driver.
We clamped the tap in a standard ER25 collet, no axial freedom (it's called _rigid_ tapping after all...). We had the g33.1 move start with the tip of the tap around 5mm above the hole so the spindle and Z would have time to accelerate to cruise speed before hitting the hole. Our threads appear OK, perhaps somewhat loose, but that may be because the drill makes a slightly oversize hole. Anders ------------------------------------------------------------------------- Check out the new SourceForge.net Marketplace. It's the best place to buy or sell services for just about anything Open Source. http://sourceforge.net/services/buy/index.php _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
