[usbcd36]

Ugh…

Trying to put in the roll pins today was very frustrating.

We tried putting the first pin into one of the output shafts, and the shaft caught the end of the pin and unraveled it a bit. The second pin went in, but the top mushroomed and eventually fell into pieces, leaving us with a plugged hole and only two roll pins left (the ones from the second gearbox).

After completely destroying two titanium carbide bits trying to drill the pin out, we went out and bought a new 3/32" bit and enlarged the hole in the second shaft. The metal the shaft is made of is easy to drill with a good bit and drill press. The pin went into that shaft with a more reasonable amount of force, and it's also plenty secure.

We're going to have to do something else to clear the hole in the first shaft, though. There are fragments of one of the drill bits left in there, which makes it nearly impossible to drill out with anything we have, and nothing budged when we tried to punch it out.

Any ideas?