hot_wire Posted June 27, 2010 Report Share Posted June 27, 2010 Any sponsors or recommended shops near the Clintonville/Worthington area? I have an aluminum part with four stainless steel m6 bolts that are sheared off in it. I am looking to drill and retap those four holes (about 1/2 inch deep). Going up a size does not matter. Any clue what I should expect to pay for this job? I assume that it would be fairly quick/simple (only need a shop drill press). Walk in or same day service would be cool! Quote Link to comment Share on other sites More sharing options...
AJ Posted June 27, 2010 Report Share Posted June 27, 2010 stainless is hard to drill so don't assume quick/simple. aluminum and stainless are two metals that should never be put together. Quote Link to comment Share on other sites More sharing options...
hot_wire Posted June 27, 2010 Author Report Share Posted June 27, 2010 stainless is hard to drill so don't assume quick/simple. aluminum and stainless are two metals that should never be put together. Hmm.... I'm not positive that they're stainless on aluminum then. I drilled into one of them easily with my cheapo black and decker. I just assumed that they were stainless by how tightly stuck they were into the part. Got a machine shop for me!? Quote Link to comment Share on other sites More sharing options...
Guest 614Streets Posted June 27, 2010 Report Share Posted June 27, 2010 Trying to think of someone to do "fairly quick/simple " for that type of a job , and NOBODY comes to mind. You are probably going to have to helicoil the threads. Quote Link to comment Share on other sites More sharing options...
Guest 614Streets Posted June 27, 2010 Report Share Posted June 27, 2010 Post a picture of the part. Quote Link to comment Share on other sites More sharing options...
hot_wire Posted June 27, 2010 Author Report Share Posted June 27, 2010 This is a really high stress part, so I'm afraid to use helicoils in it. I would drill and tap it myself, but I am inexperienced, and I want the threads to be near PERFECT so that nothing goes wrong in the future. If the screws were to back out, I would ruin a propeller, a drive shaft and all kinds of shit that I don't want to deal with. Photos in a sec Quote Link to comment Share on other sites More sharing options...
Guest 614Streets Posted June 27, 2010 Report Share Posted June 27, 2010 Helicoils are stronger than aluminum threads by far. Quote Link to comment Share on other sites More sharing options...
hot_wire Posted June 27, 2010 Author Report Share Posted June 27, 2010 Overview http://img.photobucket.com/albums/v173/hot_wire/DSC01429.jpg One I drilled into http://img.photobucket.com/albums/v173/hot_wire/DSC01432.jpg They each poke up about 2mm. This one is in a bit of a recess, while the others are on the flat outer rectangle portion. http://img.photobucket.com/albums/v173/hot_wire/DSC01431.jpg Quote Link to comment Share on other sites More sharing options...
Guest 614Streets Posted June 27, 2010 Report Share Posted June 27, 2010 Could probably torch them out with a little pizaz... Othwerwise if not I would just grind them flush , buy a helicoil kit , index the bolts with a digital caliper , perm marker the center , punch it , buy the correct heli coil kit , drill the hole out and heli coil it. Quote Link to comment Share on other sites More sharing options...
hot_wire Posted June 27, 2010 Author Report Share Posted June 27, 2010 Could probably torch them out with a little pizaz... Don't have much experience here either haha! You own a shop, correct? Think you could tear them out? I gotta warn you that I did break off an easy out in one of the holes. If that one can't be fixed, I think that the rest will still hold enough. Edit: You may want to look into your website... Firefox has it on a list of "attack sites" that are unconsciously distributing bad software. I reported it as okay, but the warning stayed in the corner of my browser. Quote Link to comment Share on other sites More sharing options...
Guest 614Streets Posted June 27, 2010 Report Share Posted June 27, 2010 Yeah I can get them out. Quote Link to comment Share on other sites More sharing options...
vanaman Posted June 28, 2010 Report Share Posted June 28, 2010 Ive had the carquest shop on silver drive drill out bolts before. steve Quote Link to comment Share on other sites More sharing options...
Dave1647545494 Posted June 28, 2010 Report Share Posted June 28, 2010 looks like a good torch and a pair of vice grips would get most of those out Quote Link to comment Share on other sites More sharing options...
Dave1647545494 Posted June 28, 2010 Report Share Posted June 28, 2010 when you put it back together take the time to go to an aircraft supply and buy those bolts in titanium they will be far lees likely to corrode and weld into the aluminum casting like that Quote Link to comment Share on other sites More sharing options...
hot_wire Posted June 28, 2010 Author Report Share Posted June 28, 2010 Sweet. 614streets, I am working in Powell all week, but I may call you over lunch to see where you're located and if you're around. Thanks for the advice and the aircraft recommendation. Would not have considered that one. Quote Link to comment Share on other sites More sharing options...
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