The collegiate pistol team I help coach has two Russian target air pistols that have broken cocking linkages. I have replacement parts, but I need to disassemble a linkage that has a swaged pin in it. The ends of the pin are even with the sides of a piece I need to rescue undamaged. I had originally planned on drilling/milling out the center of the swaged part enough to press the pin out, but I discovered that the pin is free to rotate. There's nothing exposed enough to hang onto that I don't need to largely cut away.
I can probably grind out the swaged bit VERY carefully with a Dremel, but it's going to be tedious & fussy.
The pins are about 5/16" in diameter, and each end has a shallow drilled out section. It looks like they pressed ball bearings into the ends to spread them. The linkage the pin goes through is countersunk on both sides, so the swaged bits hold everything together.
There a picture here:
The pin is the large one with the dimple just left of center in the image.
The only way I can think of to physically hang onto the pin is to make an expanding collet that goes into the drilled out pocket on the far end of the pin. That is going to be tenuous at best, and it's a lot of work to fabricate for a high likelihood of failure.
One other option would be to crazy glue everything together, mill out the swaged bit, and then soak it in acetone until the pieces free up. That assumes the crazy glue can handle the machining forces.
Before I drag out the Dremel, does anyone have any better sugestions?