rdm1962 Posted June 16, 2013 Report Share Posted June 16, 2013 The Yugo 24/47 I am building for my Daughter was ready to be D&T. I had all 4 holes drilled. The first 3 holes tapped just fine. I screwed the tap into the 4th hole. Then as I was backing the tap out it broke. I can't really complain that it broke. This is the 5 receiver I tapped with that tap. The tap broke flush with the receiver. Brownells says that these taps can be "shattered" if broken off in the screw hole. I figured I would ask for the best way to get it out first. I thought maybe the receiver could be re installed in the D&T fixture. The tap could be drilled out using the correct bushing. I have a 2nd tap to clean up the threads. Any one have any other ideas on how to get it out. Ralph Quote Link to comment Share on other sites More sharing options...
donmarkey Posted June 17, 2013 Report Share Posted June 17, 2013 Just use a punch. But most of the time you will need to redrill and tap oversized, either to #8 or to the special oversized size brownells sells. I tap extractor is my first go to before trying to shatter out a tap. Usually then you can just retap the same size. You can get them from brownells or msc. Or pm me your address and I can lend you mine. Note this is why I never use a tap twice on a receiver. I save the used taps for general shop stuff or truck guns. Good custom stuff warrants a new tap. Don Quote Link to comment Share on other sites More sharing options...
Sailormilan2 Posted June 17, 2013 Report Share Posted June 17, 2013 Don is correct. Just use a punch and tap it with a hammer. What you might try doing, and I have never tried this yet, is to get some of the canned "air" used for blowing dust and stuff out of computors, and spray the broken tap with the can inverted. That causes the cold, compressed liquid to come out and freeze the tap, and should make it more brittle so that it will break/shatter easier. Quote Link to comment Share on other sites More sharing options...
rdm1962 Posted June 17, 2013 Author Report Share Posted June 17, 2013 Thanks for the info Guy's. Don a PM is in bound. Ralph Quote Link to comment Share on other sites More sharing options...
gun nutty Posted June 17, 2013 Report Share Posted June 17, 2013 Don is correct. Just use a punch and tap it with a hammer. What you might try doing, and I have never tried this yet, is to get some of the canned "air" used for blowing dust and stuff out of computors, and spray the broken tap with the can inverted. That causes the cold, compressed liquid to come out and freeze the tap, and should make it more brittle so that it will break/shatter easier. That's a "cool" idea. Could you use something like dry ice too? Along with temperatures, would it be possible to spot-anneal the tap with a torch and a ton of heat paste? Quote Link to comment Share on other sites More sharing options...
karlunity Posted June 18, 2013 Report Share Posted June 18, 2013 "tap extractor" The nice thing about this place is that you can learn thing here. I did not know that there was such a tool. Bob Quote Link to comment Share on other sites More sharing options...
rdm1962 Posted June 18, 2013 Author Report Share Posted June 18, 2013 "tap extractor" The nice thing about this place is that you can learn thing here. I did not know that there was such a tool. Bob I didn't either. The extractor runs about $13 and replacement /fingers are $6 for a bag of 10. I just add them to my wish list and they will be on my next order. Ralph Quote Link to comment Share on other sites More sharing options...
gun nutty Posted June 19, 2013 Report Share Posted June 19, 2013 I've used broken tap extractors before; they sometimes work, and sometimes they don't. I didn't realize they went that small. Wow. Quote Link to comment Share on other sites More sharing options...
ken98k Posted June 19, 2013 Report Share Posted June 19, 2013 The tap extractor didn't work for me, YMMV. A sharp punch and a quick sharp blow from a hammer worked best for me. Quote Link to comment Share on other sites More sharing options...
rustvyper Posted July 1, 2013 Report Share Posted July 1, 2013 Drill it with a smaller carbide bit. It will usually shatter after just a bit of pressure. Run a new tap through & see if the hole can be saved. Believe it or not I've put jb weld in a damaged hole like this, let it cure, redrilled & re-tapped. Over half the threads were still metal, but the epoxy took a thread just fine & the mount is solid as a rock. Quote Link to comment Share on other sites More sharing options...
donmarkey Posted July 1, 2013 Report Share Posted July 1, 2013 A 3mm endmill is better than a drill. The endmill won't try to pull into the low spot on the broken tap and is a hair smaller than the #31 so you have less chance to damaging the threads. Don Quote Link to comment Share on other sites More sharing options...
Kevin Coakley Posted July 17, 2013 Report Share Posted July 17, 2013 I did the same thing "once". I took a sharp prick punch and "unscrewed" the piece far enough to grab it with a needle nose pliers. Worked like a charm. KC Quote Link to comment Share on other sites More sharing options...
Guest dwade7551 Posted November 2, 2016 Report Share Posted November 2, 2016 If the tap is carbon steel it will usually break. HSS sometimes just peens. That's the reason that Brownells sell the smaller taps in carbon steel. Maybe the freezing idea will work. I think the carbide drill idea is best if you have one small enough. Quote Link to comment Share on other sites More sharing options...
Dr.Hess Posted November 3, 2016 Report Share Posted November 3, 2016 This thread is a bit aged, but thanks for your input and welcome to the board. Personally, I get a small punch and try to hammer the broken bit in an anti-clockwise direction. Sometimes you can break them loose to the point that you can have something to grab onto and twist out. Quote Link to comment Share on other sites More sharing options...
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