For all of you out there who use the rotary tumbler and use the
plastic four-inch opening drums of different sizes that have a type
of expandable plugs that works by turning a wing nut on a stainless
steel cover I’ve got a goodie for you.
I purchased a tumbler on eBay from an individual who makes them,
super heavy-duty great price he even makes his own drums from gigantic
PVC connectors. Very clever, but the drums he makes are round inside
them from what I gather all our more suitable for lapidary tumbling.
But I digress, it is from him that I got the following idea. Instead
of using a nuisance cumbersome ergonomically irritating expandable
four-inch plug on your plastic tumbling drums go get a 4 inch rubber
PVC cap from your local big box store they come with a stainless
steel band that I tighten with a small cordless drill and a hexagon
bit (you can get the same type bit it in a screwdriver format) it fits
perfectly, pop on,pops off no leakage no index finger and opposing
thumb finger stress.
About five bucks, a serious improvement.