Check this beast out!!!

[lincpimp]

What size pinion do you need metalman? I just bought the ones from sdp-si, they are nice, but only useable with a plastic spur. The file method will work, I have doe it myself. i was thinking that a grinding stone would be better than a file. Like one you would use in an angle grinder. Just hold it against the shaft and keep the motor rpm down. The file has to be held just right to keep the shaft even.