Originally Posted by
LabRat
I just worked on some Polaroid Copal/Prontor lens & shutters a couple of weeks ago... I seem to remember that at least one of them had some thread lock applied to the threads...
No problem, first look carefully at the rim around the mating surfaces to see if you can detect a tiny blotch of the dried goo... If so, go to the drug store, farm feed supply, or ask a diabetic friend for a hypodermic syringe... Then get some acetone, or nail polish remover and suck a very small amount up into the syringe... Then carefully apply the smallest droplet from the tip into the seam where the threads meet, esp. in the goo area... Let it sit for a few minutes, then repeat 2 or 3 times over time... This will soften the thread lock, and allow the threads to turn with a spanner wrench...
Careful not to get the acetone onto any painted or plastic surfaces as it can damage the finishes...
What goes in, must come out... (somehow) If it does not turn with reasonable force, go to plan B... (Stare at it for a long time until you figure it out!!!!)
Good luck!!!
Steve K