Screw that will not unscrew. Problem with my military, para2 and yojimbo 2

S

SMC knives

Joined
Mar 20, 2015
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18
Kind of new to blade forums but I love knives. With my love of knives comes curiosity, I want to disassemble every knife to the individual parts. Now here is my problem, when I unscrew one side to the knife and get a handle scale and liner off of one side, some times a screw will not unscrew. For example I have a stop pin that just keeps rotating when ever I try to unscrew the screw. I tried many things like screwing it back together and removing the other screw first but it just unscrews the opposite screw. I know this is confusing but I need some help. How would you unscrew a screw that is stuck in a stop pin and just rotates. I would suspect this is because there is picture holding the screw in. Well thanks in advance guys and gals.
 
Might hold whatever it screws into (I'm picturing a pillar) with needlenose pliars. Gently.

Edit. I'm assuming you can get to said part TO hold it in the first place.
 
You can also try holding a soldering iron/gun to the head of the screw for a few seconds. This will melt any locktite that might be causing the screw to not break loose.
 
Suggest trying - Clean any lock-tite, etc from opposite side screw and install (to hold stop-pin, stand-off, etc. secure), then remove opposite side screw. There may also be lock-tite, etc. inside the female threads (bend tip of small pin, use dental-pick, etc to get inside to clean threads. (Pliers on a blade-stop-pin can damage the surface affecting lockup.)
 
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