My DIY Wet Tumbler - Too Fast?

[reverser]

I used to use a rubber test plug in a pvc pipe with a longer carrriage bolt as the shaft. Worked realllly well.

If you aren’t doing rifle brass a 4 inch pipe works really well too and is easier to handle. I find that I don’t need agitation fins if I’m tumbling at the right speed. Too fast and they’ll stick to the outside, too slow and they’ll stay in the same spot without moving. You’ll find the sweet spot by listening to it tumble.

how is the bucket connected to the motor?

If you're just using a bolt and washer you need something other than tightness to lock the system together otherwise the weight might just make the motor shaft spin in the bucket.

You'll probably need to reinforce the bucket too because if you just drill something into the plastic it may just shred the bucket but the motor probably doesnt have enough torque for that.

[anonymouscuban]

The bucket is connected to the motor shaft by a union nut. The union nut is attached to a carriage bolt that goes through the wall of the bottom of the bucket. There is a large washer on each side of the bucket wall and also a rubber washer on the inside to help seal things up. The bolts not gonna pull through the bucket.

I am trying to figure out what to use as agitators. I searched through all my junk in the garage and can't seem to find anything that will work.

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[protohyp]

[SkyHawk]

Hard to know if that speed controller is good without knowing the load of your application and the max load rating of the controller.

You could try pvc agitators like I posted in your switch thread. It’s what I use to tumble brass in my Harbor Freight rock polisher/tumbler. After trying several adhesives, CA glue now holds them to the rubber liner very well - they have not come loose yet. You may have to experiment with glues to see what holds for you.

Just cut some lengths of 1” PVC, split them down the middle with a hacksaw, and stagger them.

[Christopher761]

what could go wrong just jump it to your car Battery fill with brass and water and stand back

Car batteries are not meant to draw that kind of current for an extended period of time. Unless the motor is running (and charging the battery) it will kill the car battery. You really shouldn't draw them down below 90%.

Deep cycle batteries would work better. But only draw then down to 50%. Make sure you have some sort of discharge limiter so that the battery does not go below 12.1V.