barrysuperhawk Posted January 15, 2020 Share Posted January 15, 2020 I have a friend with a milling machine, and a poorly executed fast fire 3 cut on a glock slide that resulted in the sight being crooked. Actually one of the mount holes is tapped wrong. So. I am not attached to the fast fire 3, but I would like to see if I can salvage the slide. My first idea was to maybe find another mini red dot sight with a different enough mounting pattern that I could just drill and tap some new holes and be done... I have found the cross references showing which sights use the same set up but none of them are specific enough to tell me if the actual screw spacing is different enough to live on the same slide. An additional benefit would be had if the new sight was physically larger than the fast fire 3, because the actual cut is also oversized, too. Link to comment Share on other sites More sharing options...
lonestardiver Posted January 15, 2020 Share Posted January 15, 2020 For some people it may help to post a picture of the slide to help get a better idea of the situation and be able to provide a better solution.... Link to comment Share on other sites More sharing options...
barrysuperhawk Posted January 15, 2020 Author Share Posted January 15, 2020 Sure, I can post one tonight when I get home, but the actual problem is the sight is both off center, and angled to the left, to where if the dot is mechanically centered, it bears closer to the closer to the corner of the slide than the front sight hole. Put another way, the tapped holes in the slide are not even with each other, the right side is closer to the front. Link to comment Share on other sites More sharing options...
Benevolence Posted January 15, 2020 Share Posted January 15, 2020 If your mounting holes are tapped all fubar, I would extend the milled pocket forward or backward (depending on constraints from ejection port and rear sight) ~1/4" or so and redo the drill/tapping of holes. Link to comment Share on other sites More sharing options...
jaques Posted January 15, 2020 Share Posted January 15, 2020 If the tapped holes are messed up, I would just drill and tap the existing holes for helicoils. Link to comment Share on other sites More sharing options...
NoSteel Posted January 16, 2020 Share Posted January 16, 2020 Install screws with Red loctie, mill heads off flush and the drill / re-tap.. Link to comment Share on other sites More sharing options...
Toolguy Posted January 16, 2020 Share Posted January 16, 2020 I would tig weld the bad spots and remachine. If the holes are only off a little bit, plugging them with screws won't work. There will only be a sliver of screw left after re drilling, and that will fall off. Helicoils would still be in the same wrong location. The over cut slot could be welded and recut. Remember - measure twice, cut once. Weld, repeat. Link to comment Share on other sites More sharing options...
barrysuperhawk Posted January 16, 2020 Author Share Posted January 16, 2020 Ok, if I can find a tig welder to weld up the hole(s), the replacement hole is going to overlap the old hole. Am I going to have to worry about the weld being harder or softer than the base stainless (whatever lone wolf makes their SS slides out of)? Link to comment Share on other sites More sharing options...
Dwbsig Posted January 17, 2020 Share Posted January 17, 2020 3 hours ago, barrysuperhawk said: Ok, if I can find a tig welder to weld up the hole(s), the replacement hole is going to overlap the old hole. Am I going to have to worry about the weld being harder or softer than the base stainless (whatever lone wolf makes their SS slides out of)? Tell the welder what you wanting to do he will know the right filler material to use. Link to comment Share on other sites More sharing options...
Shep Posted January 17, 2020 Share Posted January 17, 2020 Make sure its clamped to a true table before welding to keep from warping the slide. Link to comment Share on other sites More sharing options...
zzt Posted January 18, 2020 Share Posted January 18, 2020 Barry, the vast majority of micro reflex sights are on a .550" hole spacing, regardless of the threads used. If you are willing to have the sight sit a little higher than it would if properly milled, you can screw on a thin (1/8" adapter plate and thread that correctly. Since your friend screwed up the first go round, I'd send the slide out to someone professional who does that for a living. It is definitely possible to salvage the slide. Link to comment Share on other sites More sharing options...
barrysuperhawk Posted January 18, 2020 Author Share Posted January 18, 2020 Well that might not work very well, I've called two of the bigger players in the Glock slide cutting industry, such as it is, and explained to them what the problem is, and both of them declined to take on my project. As annoying as it is I'm not blaming either one for not wanting to get in the middle of this. Here are pix of the Botch https://imgur.com/a/JSpYTE6 Link to comment Share on other sites More sharing options...
Talon75 Posted January 18, 2020 Share Posted January 18, 2020 Your friend owes you a new slide, that is a hack job and unfortunate, I'd go as far as cutting off the power cord to his mill. Link to comment Share on other sites More sharing options...
Matt1911 Posted January 18, 2020 Share Posted January 18, 2020 Was this an actual mill, or a cross slide vice placed under a drill press? Link to comment Share on other sites More sharing options...
dantrap Posted February 13, 2020 Share Posted February 13, 2020 i agree with Talon 75, total hack job. yuk. Link to comment Share on other sites More sharing options...
barrysuperhawk Posted February 13, 2020 Author Share Posted February 13, 2020 Yes an actual mill. The good news is that I found another friend with a tig and a mill, we welded up the holes and re tapped them straight. Then, for good measure, we cleaned up the cuts a bit. Its not perfect, but its useable... Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now