Crazy Scientist Posted March 21, 2018 Share Posted March 21, 2018 If I need to fit something like a CZ Safety, what are the proper tools to use. I know very little of files/sanding/etc. For instance I needed to take something from .085 inches to 0.80 inches (measured with caliper) in width. Sanding job or file/stone? And then the follow up which type of sand paper/file/stone... Link to comment Share on other sites More sharing options...
M1A4ME Posted March 22, 2018 Share Posted March 22, 2018 I've only used stones. It's slower than files, but better to take off too little, then have to go back to the stone and take off more, than to take off too much. I use knife sharpening stones (bought for using on the guns, not for the knives - use a Lansky kit for the knives). I just use regular gun oil on the stones, nothing special. I've really only fitted three safeties on CZ. Had to modify the height of the cam that fits under the sear finger/arm on one of them (used the CGW adjustable sears after that) and the right end of a couple left side safeties when installing ambidextrous safeties on a couple pistols. Either way (files/stones) you've got to maintain angles and clean the parts up before test fitting, lube them when done, clean the stones up afterwards before you put them away and go slow. I've never used calipers to measure the before/after on parts I was stoning. I used "does it fit/work yet." If you used calipers, remember that one of the steps is to stop filing/coarse stoning soon enough that when you do the final fine stoning/polishing of the part that it doesn't end up too small/short after the polishing part. Link to comment Share on other sites More sharing options...
cs62 Posted March 22, 2018 Share Posted March 22, 2018 I use stones, Brownells has many different types and sizes. Link to comment Share on other sites More sharing options...
yigal Posted March 22, 2018 Share Posted March 22, 2018 (edited) probably this tool in cz factory they use to install mine safety. Edited March 22, 2018 by yigal Link to comment Share on other sites More sharing options...
mike cyrwus Posted March 22, 2018 Share Posted March 22, 2018 FINE CUT PILAR FILE Link to comment Share on other sites More sharing options...
Crazy Scientist Posted March 22, 2018 Author Share Posted March 22, 2018 1 hour ago, yigal said: probably this tool in cz factory they use to install mine safety. I've learned that lesson the hard way! Fortunately it was not a firearm (I f up in other more creative means). Link to comment Share on other sites More sharing options...
ACree Posted March 27, 2018 Share Posted March 27, 2018 If you do invest in some files, stay away from Nicholson files, they are junk. I have have decent luck with Grobet. Link to comment Share on other sites More sharing options...
teros135 Posted March 27, 2018 Share Posted March 27, 2018 Friedrich Dick files (German) are also of high quality. Good needle files. Got a set of #2 and #5 from riogrande.com , very helpful. Link to comment Share on other sites More sharing options...
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