A gilt Tudor 7928, a nut and a breaker bar.

[interestedwatcher]

Originally Posted by Dan S

Well done and nice find. I don't know why a longer lever arm on the wrench would solve the problem with the case-holder pins, since the torque required to open the back was apparently more than the pins could tolerate, but I'm happy that it worked. I would generally clamp the case using posts that fit in the spaces between the lugs. Heat is a good idea, and there are some other tricks that can help if all else fails.

Longer bar allowed smoother and more even application of force. I suspect when the pins were bending, that was a result of me having to really muscle the small wrench and it didn’t stay on the flat - so all the pressure would go to one or two of the pins.

Good tips for the really tight ones!