Archived posting to the Leica Users Group, 2010/01/30
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Beeswax, eh? How Rivendellian of you? Really, beeswax is a magical substance. It is just so sticky enough to hold the thread but does not cause collateral damage. It even smells good too. Ken Iisaka <first name at last name dot com or org> Still lost in Mill Valley, Marin County On Jan 30, 2010, at 6:21 PM, Spencer Cheng <spencer at aotera.org> wrote: > Geoff is quite correct. It cost me $150 for Gerry @ Kindermann to > adjust the infinity focus on my 180/2.8 because someone had used an > inappropriate thread adhesive. > > The other suggestion I have is to use bees wax instead of a thread > adhesive. It's not an adhesive but provides just enough friction so > the screw doesn't back itself out. Works on bicycles. :) > > Regards, > Spencer > > On Jan 30, 2010, at 20:18, Geoff Hopkinson wrote: > >> Howard, Spencer has pointed out the different grades of Loctite for >> you. In >> my opinion you should be very cautious about using it on very fine >> sized >> bolts in your lens mounts. It can be done but be aware of the >> pitfalls. Use >> VERY small amounts of the correct grade. Incorrect tool choice or >> application can easily cause the screws to shear as well and you >> are adding >> to the required force. Invest in some good instrument screw drivers >> as well. >> Actually you can entertain yourself for hours browsing and shopping >> on the >> specialist sites that sell such tools. >> >> Not meant to scare you, very likely you won't have any problems. I've >> disassembled the M mounts from several Zeiss (Cosina) lenses and >> they are >> fitted with thread lock and are removable with care. Dependant on the >> fasteners' locations you may want to consider locking them >> externally with a >> tiny drop of lacquer (like the suggested nail polish) instead. That >> has the >> advantages of being more readily removable as well as acting as a >> teltale >> for any fastener displacement. Plus if you choose the right colour >> it can >> complement the sparkle in your eyes. >> Cheers >> Geoff (who was a fitter/technician in a previous life) >> http://www.pbase.com/hoppyman > > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information