Medved11 0 Posted September 14, 2015 Report Share Posted September 14, 2015 (edited) I'm getting myself set up to install the bullet guide in my 5.45 conversion as soon as the part arrives from Dinzag Arms. I don't trust myself to be able to drill a straight hole by hand in this case, so I want to use a drill press. While I'm waiting, I tried this afternoon to figure out how to best orient the gun on my drill press so that I can get to work as soon as the parts show up; however, I'm having trouble getting the trunnion and drill bit to line up as the mag catch is getting hung up on the side of the press table (I've got the gun in a drill press vice with a pair of soft jaws attached). I'm sure that I'm missing something obvious but is there something that I should be doing to make work better (maybe a block of wood underneath the vice to add a bit more clearance)? Any advice would be appreciated. Edited September 14, 2015 by Medved11 Quote Link to post Share on other sites
SuRrEaLNJ 182 Posted September 14, 2015 Report Share Posted September 14, 2015 The biggest piece of advice I received when doing mine was to bag the drill press and do it by hand. Go slow and use lube but it's fine to do it by hand. 1 Quote Link to post Share on other sites
Sim_Player 1,939 Posted September 14, 2015 Report Share Posted September 14, 2015 Yup. Did two with a cordless drill. Drill a smaller hole first and then step it up to your final size and tap threads. Go slow, lube, and clear metal chips. It takes about 15 min. 1 Quote Link to post Share on other sites
Medved11 0 Posted September 16, 2015 Author Report Share Posted September 16, 2015 Can you guys give me an idea as to how you secured the receiver to drill the hole by hand? I'm probably over-thinking/complicating this whole thing - However, I think that the thing that is "scaring" me off from doing it by hand is making sure that the gun is level and secure when I drill. Quote Link to post Share on other sites
SuRrEaLNJ 182 Posted September 16, 2015 Report Share Posted September 16, 2015 (edited) I sat it on a scrap piece of 2x4 on my work bench. There's a bunch of tutorials on YouTube you can watch Around the 11 minute mark on this one Edited September 16, 2015 by SuRrEaLNJ Quote Link to post Share on other sites
Medved11 0 Posted September 17, 2015 Author Report Share Posted September 17, 2015 I'm guessing that using a drill for the tapping is not recommended. When lining up the guide in the trunnion it just needs to be centered and to the left of the bottom lip of the barrel, correct (to make sure that it doesn't interfere with the travel of the bolt)? Quote Link to post Share on other sites
SuRrEaLNJ 182 Posted September 17, 2015 Report Share Posted September 17, 2015 No tap by hand. Flat trunion or round. Mine was flat and installed centered left to right and pushed all the way to the front. Someone who's done a few of these things could probably chime in there Quote Link to post Share on other sites
G O B 3,516 Posted September 17, 2015 Report Share Posted September 17, 2015 YOU CAN TAP WITH THE DRILL PRESS, DO NOT CHANGE THE SET UP, but TAKE THE BELT off OF THE PULLIES. tHEN DISABLE THE RETURN SPRING. Now turn the pully by hand. 1 Quote Link to post Share on other sites
Sim_Player 1,939 Posted September 20, 2015 Report Share Posted September 20, 2015 (edited) Your gonna wanna tap by hand. A $10 tap wrench is best. Watch a few videos to see how it's done. Oil tap, turn a couple threads, back out, clear chips, repeat, go slow, keep it straight. When you feel resistance back it out (cutting just a little deeper everytime). Again, watch a video, first! Edited September 20, 2015 by Sim_Player Quote Link to post Share on other sites
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