Broken Tap Removal by Metal Disintegration Machine (MDM)

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2013-04-06に共有
Tom Grafton of Jerry's Broken Drill & Tap removes a broken tap from a heavy industrial cast iron part. A Metal Disintegration Machine (MDM) or Electric Discharge Machine (EDM) was used to successfully disintegrated the broken tap saving the customer thousands of dollars. The broken tap didn't have a chance!

This is how to remove a broken tap the right way.

コメント (21)
  • He probably doesn't remember me but i brought him a firearm part with a broken tap in a threaded hole. I asked him how much and he said $50 and come back on Monday (it was Fri morning). So I said " What if I gave you a hundred bucks?" And he says "come back in an hour and it will be finished." So anyways He did a fine job fixing my gun part and we BS'd for about half an hour about guns and offroad riding . Really a cool guy.
  • I find it shocking that there are enough broken taps in the world to keep a private business open. That's amazing.
  • What a cool dude! Could watch and listen to him all day. Notice how well spoken he is, no erms or ohms between words. A wise man with a focused mind. Excellent video, was enjoyable and educational at same time.
  • @pssst3
    Love watching a skilled artisan at work
  • That was an absolute pleasure to see in action. Not nearly enough proper machinists left out there who can still use these kind of tools.
  • @opforind
    Removing broken taps, drills and stripped bolts was my favorite thing to do when I worked in a machine shop. It was a nice break from running production jobs that never seemed to end and you really felt like you had accomplished something and saved the company some money by fixing a part that would have been scrapped.
  • @TorqueTheRich
    As a 40-year Journeyman Tool & Die Maker, that was very satisfying to watch.
  • @mark5862
    Hi there! I remember sending you a part (model steam locomotive frame) about 8 years ago to have a #5-40 tap removed. Great to see you on youtube.
  • I didn't realize there was that much demand to remove broken taps. From the looks of that casting and the work that had been put into it, you saved them a ton of money. Great work Tom Grafton. You keep chewing your gum, to heck with the boo birds.
  • @dtThurman
    I was a machinist in a factory for ten (10) years circa '67--'76 and somewhat perfected a process of removing broken taps other maintenance techs had broken. I only had small high-speed steel chisels, such as Tom mentioned made of M2 steel. Later I went to work for another company who brought in an EMD machine. Once the factory tech showed me what it would do I almost hugged him. When you work with "bull work" mechanics an EDM machine pays for itself quickly.
  • That calm voice and demeanor makes me think that he can do about anything! Great vid.
  • As a professional and home machinist. The whole process of conventional edm and wire edm was a very hard thing to master for me. It takes skill and knowledge to do this right. I used to take taps out using graphite and trode holders. Never a dull moment
  • @MrShobar
    Thanks, Tom, for a fine demonstration of old-school, pure unadulterated know-how.
  • @nlo114
    Good demo. We have a guy near me called 'The Thread Doctor' who travels around garages and workshops doing in-situ work like that, high quality job, with a high-quality price. He has saved a lot of engine castings from being scrapped, so well worth the money.
  • @bobm549
    Like " this old codger " , I am 65 and still working as a millwright and chewing gum constantly. It helps the brain stay sharp . Nice work Tom , beats the hell outa working hours with small chisels .
  • What satisfying work, and what a great service you provide. I can just imagine how many people over the course of your career have heaved a great sigh of relief when you informed them you saved their bacon.
  • WOW what a natural teacher. Everyone who wants to make instructional videos should follow Jerry's example in HOW TO.
  • Pretty sure this guy could care less that you guys don't like him chewing gum. Its his job and hes making this to show people his machine, not to attract huge amounts of supporters.
  • Specialized services like this can be a life saver for some people. It's a pleasure watching an old timer share his knowledge with younger guys who have respect for a lifetime of experience. I never even noticed his gum chewing until it was mentioned in the comments. I was too busy watching and learning something new. Great video
  • Thank you very much for sharing your knowledge, Mr. Grafton. It was a privilege to watch you work.