KAYZER Posted September 7, 2016 Share Posted September 7, 2016 hey Guys, been idle for a while, just did not have any stuff to share. Well now I bought an older Limited Custom for IPSC Standard (Large Frame) in 40 cal and 9*19 second slide. Got a great deal for 450 euros and included a speed holster, a rig and 9 magazines in both 40cal and 9MM. Now I already have a Small frame Limited Custom in 9*19 wich has mounting holes. I also got a second hand thumbrest from DAA wich i would like to mount on it so my 2 gus are alike. Maybe the resident Tanfo doctors can tell if it is possible to drill and tap 2/3 holes for the thumbrest in the leftside of the frame? Which M-diameter is used and what drill can be used? I know I need to buy a 3-step (pre-middle-finish) for the threading. Link to comment Share on other sites More sharing options...
kneelingatlas Posted September 7, 2016 Share Posted September 7, 2016 Yes, the holes are M4x0.7, but be aware the frame may be very hard. Link to comment Share on other sites More sharing options...
KAYZER Posted September 7, 2016 Author Share Posted September 7, 2016 Any tips atlas? Verzonden vanaf mijn iPhone met Tapatalk Link to comment Share on other sites More sharing options...
kneelingatlas Posted September 7, 2016 Share Posted September 7, 2016 I'm not much of a metallurgist, but I've read about spot annealing to soften the metal before drilling/tapping. Link to comment Share on other sites More sharing options...
dogtired Posted September 7, 2016 Share Posted September 7, 2016 (edited) I used a 'center drill' to get the hole started in a precise location, then the drilling went pretty easy. Took my time with the tapping as it was hard, I only used one tapping bit. Edited September 7, 2016 by dogtired Link to comment Share on other sites More sharing options...
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