Do any of you folder makers use Thread Lock to keep the pivit pin screws from coming loose and if you do can thay be removed with heat from a soldering iron Gib

I can't answer as to whether it is used or not, but I use the stuff all the time on cars and there are different grades. some come apart with hand tools, some with air tools and some you have to heat www.loctite.com/indexna.html (http://www.loctite.com/indexna.html)

I use Loc tite 290 thread locker on all screws except the screws that hold on scales. Heat will break the bond.

There are at least 3 types of thread lock, each with different strengths. Red is the strongest (and pretty permanent for small screws - heat will break the bond though), blue is nearly permanent for small screws, but the purple (Loctite 222) is just about right (but a little harder to find - try McMaster-Carr). I use it, sparingly, on pivot screws of liner locks, and the screw stays put until I decide to change it. I don't bother with it on the other screws because they seem to sty OK without, but it certainly wouldn't hurt to use it - just not too much.

I usually use the blue locktight. I think it is 242, but hold me too that. You don't need heat to break it loose. Just normal handtools and it holds tight enough. I use it on all screws on final assembly.

I use the blue Locktite on all of the screws I have on a folder. Frank Niro

Ditto Frank, blue here on ALL screws.

Another method that I have tried is one that Darrel Ralph uses. Instead of Loctite on the pivot screw he uses a rubber O ring. This gives tension on the screw and keeps it from coming undone. It's good for thick framed knives or knives with bolsters. No messy loctite!

BLUE!