Message #203650

[zarguy]

People ask about how to keep all the wheels tight without them free wheeling. I tighten the bolts on each end. An oversized washer under each bolt puts pressure on the assembly of PVC spacers, wheels, pulley & bearings. After tightening the bolts, I tighten the bearing setscrews, then bolt the bearings to the risers.

I sold this 6" machine & built an 8" version with just 8 wheels. I'm using a sintered 60 grit wheel for my coarse grind. It weighs 14 lbs or so, & the new machine has 4 8" x 3" rubber drums, so I have extra bearings on each end of the shaft. I have the motor mounted below the bench. It's a pretty loud machine. I'm not sure if I could reduce that noise by better balancing the wheels. I can't listen to music while grinding because of the noise.

I'm working on a new design that has just 2 trays instead of 3. The shaft is a little shorter. It's designed for 3 bearings.

I'm happy to see people making their own machines. Please post your project here or in a new thread. If creating a new thread, post a link to it in this thread.

Lynn