A little help from hot glue
Newly registered user, long time lurker. I thought you might enjoy this "uncommon tool".
The way these wafer locks work is they screw onto a threaded rod that runs down through the center of the machine. The lock holds the top down.
Once you pick the lock, you can only turn it a quarter of a turn before the wafers reset. This means you'd have to pick it around 40 times or so. So, we turned it 1/8th of a turn. Then we used a heat gun to warm up the lock. We used a big cut-off wheel to act as a heat-sink to protect the top plate. The hole in the middle of the wheel is almost the exact same size as the lock cylinder. Then we squirted in some hot glue to freeze the wafers in place and jammed a tool in there for a handle. A couple of jokes and half a beer later, and the lock unscrewed without issue. We were able to pull the entirety of the glue out in one blob and the locks still work fine. They will live on as teaching locks.
I hope you found this as entertaining as we did.
Much like the LPL, we also enjoy getting into beavers.