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Posted: 12/1/2004 8:38:42 AM EDT
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Scenario: I finally got my tap and drill but for the buffer tube. Rest of drilling is done, and this 80% is complete minus the buffer tube area. Mount lower in drill press vice. Chuck drill bit. Center. start drill up, start drilling. EXTREME LOUD grinding with chattering. looks like the lower may be hosed. The Buffer area is chipped at, rather than drilled. I ordered this: 1 1/8 USA HS S&D Drill Now, I am by no means a machinist, or a machine shop guru. What's the problem? Did i possibly order a drill bit for wood, instead of metal? Or am i doing sometihng wrong? As soon as the problem was noticed, i stopped. I've got a countersunk looking buffertube currently. Might be salvageable. this pisses me off. Help anyone? |
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I always bore out the buffer tube hole on my mill with a boring head, and I go very slowly (20 thou per pass). Also, its hard to get the receiver in a really tight setup... I usually clamp between the top deck and the roof of the trigger guard area. When you get the hoel opened up the real fun startes... keeping the bloody tap straight when tapping. |
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well, i've got a drill press with a little metal helper piece that fit in the tap, so clamp the receiver in place, setup the tap in the drill press. Then just turn the tap with a wrench while pushing down with the drill press. Now i've got to wait another week or two or three to get that darn reamer. :-( |
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ehh, shame on me for not reading your post correctly. I just noticed you mentioned that your hole is merely countersunk at the moment, and you got the reamer on the way. You can definitely salvage it with the reamer. Just make sure you have a good way to guide it straight through. |
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Dude it's possible witht the bit u have, i F--ked up on 2 before i go it right. First when using the drillpress put it on the lowest setting possable.. Then use alot of that Aluminum cutting oil.. Hand start the hole to create a good center point or just a place for the bit to dig in... Slowly lower the bit taking your time, i.e. it took me 1/2 hour-40mins to do mine... The hole came out as smooth as any real reemer could ever do... When you go to tap the hole just chuck a center punch in the drillpress and place the tap ing the hole, bring the center punch down onto the top of the tap(It should have a small divot to mark center)apply pressure while visually checking that the tap is stright and start hand turning it. Once the tap as a good grip in the hole you can turn it with a wrench, but remember to keep pressure on the tap using the drillpress untill the tap is at least 1/2 way through. Hope this helps and good luck! here is a site that i used...http://www.hicapmagparts.com/Instructions/buffer-ream.htm it has everything u need to know |
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