Tumbler Clamp

I am using two Lyman 1200 Turbo with Auto-Flo tumblers to begin cleaning my brass.   The tumblers tend to "walk around" even though they have little rubber feet.   So I decided to build a set of clamps to hold them in place while operating.   The clamps are made of 1X4 and using a tee bolt and knob to hold them in position.  

The clamps are each made from a piece of 1X4, 8-1/4" long.   The 5/16" hole for the tee bolt is 1" from the long edge and centered (4 1/8" from the end).   The cut out fits a 10" circle, so I placed another 1X4 so the edge of the cut would be 1" from the tee bolt, and drew an arc, then cut it out with a band saw.   The clamps fold together nicely for storage in one of the workbench drawers.

Click for larger pic.

A close up of a pair of clamps.

Bottom View, showing the other end of the tee track bolt.

Drawing the cutout, I used a beam compass set to 5" and another 1X4 as a reference point.

The pair folds nicely for storage.

Heres the other side of the folded pair.

Tumbler in use with the tumbler clamps on the Loading Bench.

The other tumbler in use on my woodworking bench.    Since we usually shoot two calibers on a range visit, its much faster to tumble in two tumblers.