tumbler

I have a 9A lathe with the later plunger-type reverse tumbler assembly. When the stud gear is mounted it does NOT line up with the idler. This has been a great mystery to me for the past 25 years. However, yesterday I pulled the gear train apart for "regular" maintenance and, after comparing...

A while ago I found this idea for a rotary polisher on prusaprinters: Polisher After collecting the needed parts (see link above for sources): -Motor -IKEA Glass -PWM I started to realize the project. The result you can see here: As media I ust had 2 kinds of "sand" we used in our...

I had to make a small run of some special sized nuts for an upcoming project, just shy of 100 pieces about ⅝" square in 8-32 and ¼-20. Making them was easy enough but they had burrs and sharp edges that needed to go away. The thought of processing them individually was rather unpleasant. A...

I recently purchased a used Southbend 9A lathe (1954) and am in the process of restoring it. The right tumbler lever on the gearbox is broken. I am guessing that something heavy was dropped on it. The casting just in front of the retractable knob is cracked through and the pin is bent. I found a...