-----Original Message----- For the lapping I do when I'm tightening bearings, I built a simple set up that lets me use my DeWalt drill to do the work. Because I'll only have <one> easy shot at the lapping,
******* DO NOT USE A DRILL TO LAP VALVES! A valve should be lapped for only the distance it needs to travel. By using the drill you are making more gap than necessary. This is especially true if either the casing or the rotor is not true and round as is the case with most horns. I'm sure other more experienced techs (I am not worthy of a shingle to hang out) can give better reasons yet. The drill method is most often employed by shops that do school type horns and with the expected uneven results. The Jack Attack! _______________________________________________ post: [EMAIL PROTECTED] unsubscribe or set options at http://music.memphis.edu/mailman/options/horn/archive%40jab.org
