cking Posted October 22, 2007 Share Posted October 22, 2007 My new STI didn't come drilled for the Bomar. So what size drill and tap do I need. Also any hints on installation will be appreciated. I usually just knock off the sharp edges on sight and slide, drive them in a little way then back out and see how much interference I'm getting then correct it. Clean loctite and drive till centered on the slide. Any better way???? Thanks in Advance Link to comment Share on other sites More sharing options...
Radical Precision Designs Posted October 22, 2007 Share Posted October 22, 2007 My new STI didn't come drilled for the Bomar. So what size drill and tap do I need. Also any hints on installation will be appreciated.I usually just knock off the sharp edges on sight and slide, drive them in a little way then back out and see how much interference I'm getting then correct it. Clean loctite and drive till centered on the slide. Any better way???? Thanks in Advance You will need a #31 drill and a #6-48 tap. You seem to have your act together. Just make sure the dovetail is not too tight so as to distort the base when being pushed into place. Link to comment Share on other sites More sharing options...
benny hill Posted October 22, 2007 Share Posted October 22, 2007 If you do it by hand, watch & make sure to turn the tap level, if not ,problems. Link to comment Share on other sites More sharing options...
newshooter Posted October 22, 2007 Share Posted October 22, 2007 What would be the best way? leave the slide on the mill and put the tap in the collet and turn by hand while bringing the handle hown? Link to comment Share on other sites More sharing options...
HSMITH Posted October 23, 2007 Share Posted October 23, 2007 If you don't have a tapping head Joey that would work too. Takes a gentle touch though. Link to comment Share on other sites More sharing options...
G-ManBart Posted October 23, 2007 Share Posted October 23, 2007 If you don't have a tapping head Joey that would work too. Takes a gentle touch though. Learned that one the hard way Howard....it was time for the broken tap remover...doh! Link to comment Share on other sites More sharing options...
HSMITH Posted October 23, 2007 Share Posted October 23, 2007 LOL, the things that are most painful are the last things we forget!! Link to comment Share on other sites More sharing options...
cking Posted October 25, 2007 Author Share Posted October 25, 2007 I was planning on taking the belt off, the drill press. Then turn by hand. Link to comment Share on other sites More sharing options...
Matt Cheely Posted October 25, 2007 Share Posted October 25, 2007 I drill the hole on the mill (obviously) and then tap by hand. Never had a problem. Just make sure it's relatively straight and you'll do fine. Link to comment Share on other sites More sharing options...
Dan Sierpina Posted October 25, 2007 Share Posted October 25, 2007 Put a 60 degree center in the chuck, turn the tap wrench with one hand, the quill handle with the other. That will keep it straight. Or a spring loaded tap follower. Link to comment Share on other sites More sharing options...
want2race Posted October 26, 2007 Share Posted October 26, 2007 Glad to read I'm not the only one that's broken a 6-48 tap. I was using a tapered tap. Bad. After having the broken bastard removed I finished tapping using a plug tap. The steeper cutting angle at the tip seemed to work better. I couldn't get the fingers of my tap remover down in the holes. I had to have it EDM'd out. Fortunately I found a place semi-locally with an EDM drill. Perfect hole afterwards, left all my threads intact. Life..er, Slide saver! Link to comment Share on other sites More sharing options...
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