Without having had the benefit of seeing what you're working with, this would be the way I'd lean as well. -ls-
Dave Powers <[email protected]> wrote: > Howdy Corby - > > just a couple of thoughts. I grew up in a machine shop and am an > aircraft mechanic. > > If you haven't used them before, Helicoils require a larger hole to be > drilled and tapped, because you basically install a large threaded > spacer into the original location with the right size inside threads > for your original screw. It takes a somewhat expensive drill & special > tap and insert tool to complete. > > Another solution - especially with metric - is to tap the holes ( only > bad - or all - so that they all match) to the next larger Metric size > - of the same thread pitch as original - so as not to cut across the > original threads, but just cut the same thread pitch to the > next size, such as from 5mm to 5.5mm or 6mm. Then you only have to buy > a standard - not too expesive - metric tap - and some new slightly > larger hardware. > > You can also consider tapping the original holes to the next larger > SAE - probably National Fine thread - but your new threads will cut > across the original threads slightly. > > It really depends on how much room you have to do the work - and how > much strength you need - > > Hope this helps > > Dave Powers - KA0KCI > > > > > > > ________________________________ > From: Corby Dawson <[email protected]> > To: [email protected] > Sent: Tue, April 13, 2010 1:03:55 PM > Subject: [time-nuts] repairing Maser threads > > Hi, > > It does not seem Time-Nutty but I need help repairing threads in a > mounting hole. > > I recently installed a new ion pump in an EFOS2 Hydrogen maser and two > of > the mounting holes (metric M5) > > have damaged threads. > > The bolts go in fine but wont tighten and if you wiggle the bolt you > can > pull it out. > > I've looked at the various locktight and permatex stuff but am unsure > that they will do what I want. > > I'm hoping someone has experience with these and can advise me. > > What I hope will happen with the right product is that I apply it to > the > threads, screw in the bolt until it just contacts the lock washer, > wait > until the goop cures, and then > > tighten until the lock washer is compressed and the bolt is tight. > > Just don't know what product to try! Want to be able to disassemble > without special tools or heating. > > Any help is appreciated! > > Corby Dawson > ____________________________________________________________ > Gains 625% from Killer Penny Stocks! > Sign up for FREE alerts on the next Killer Stock. > http://thirdpartyoffers.juno.com/TGL3141/4bc4b2233fb333a8aem04duc > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > >
_______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
