geoff Posted August 7, 2006 Share Posted August 7, 2006 Following on from the previous, I am looking for a way to fix a flip up rear sight to my 11/87 (yes, I know). I have no machine shop facilities so sticky stuff is the way for me. So called 'high temp' epoxies only claim to have a 200deg C limit. I am sure my gun gets hotter than that, then cools down, then heats up and so on. Expansion, contraction, expansion, contraction then 300-400 rounds later the sight falls off. I have tried conventional 2 part epoxy and glass fibre resin. Anyone got a favourite for this kind of job (yes, I know, drill and tap) Geoff Link to comment Share on other sites More sharing options...
George Posted August 7, 2006 Share Posted August 7, 2006 Two part epoxy made by Devcon called "Plastic Steel" is what holds my JPoint sight in place. The sight is mounted right on the bbl about 6 inches from the receiver where the temperature gets as hot as any metal on the outside of a shotgun does. I am using an aluminum mount on a steel bbl. I roughed up both surfaces to bare metal with a coarse grinder. 200 degrees C is a perfectly acceptable temp rating to use on a shotgun bbl. How hot do you think it's gonna' get on the outside of the gun anyway. Maybe 350-400 F at worst and that ain't anywhere near 400 C (which is 752 F) ;-) Link to comment Share on other sites More sharing options...
geoff Posted August 9, 2006 Author Share Posted August 9, 2006 Thanks George, I have ordered some and will give it a try. I shall also take my infrared thermometer to the range next time to answer the temperature question, Geoff Link to comment Share on other sites More sharing options...
blkbrd Posted August 9, 2006 Share Posted August 9, 2006 JB Weld Fixes race car engines and aircraft parts----dont ask Link to comment Share on other sites More sharing options...
Smokey Posted August 10, 2006 Share Posted August 10, 2006 JB WeldFixes race car engines and aircraft parts----dont ask +1 on the JB Weld +1 on fixing truck engine +0 fixing airplane parts Link to comment Share on other sites More sharing options...
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