Howdy. Has anyone here tried building their own spinner with a used electric motor, automotive belt or other, and an appropriate metal or other heavy duty cup on a spindle?  What about a used centrifuge with the vial casing removed and a cup mounted?  Just wondering, I have thought of this as a possible option to create a variable speed spinner on a metal tube frame.  Does anyone have any experiences?

dizzy, mucho-grassy-ass. i found the grinding bit i think you were talking about, it goes in the the chuck then has a screw at the top that anchors it. i am not sure the pvc piece was right but it was a one that works to attatch the pot onto. i have a 6" pot on it. works great. i think the grinding bit was $5.86 and thepvc was $4.86, the pot was $1.19 and about 4 screws to hold the pot on, so the total is about $13.00. not bad if you have an old drill laying around. i am still looking for that ultimate motor like a dryer motor or something with a little more juice. i was even looking into a grinder and take the stone off that might have a little more power. for now, it's cleaning all of my stuff real well. the guy at lowe's was concerned that eventually the bearings will go out from spinning a 14-15# bowling ball. we will see. thanks again for your help, i am sure it will help someone else out too. cheap and easy, just like my 1st wife. (just ask all my buddies).

AbAdA, what i really meant was muchass-grassy-ass. but i don't know spanish any better then they know english, but that's another subject. it really is quite easy. one thing i forgot to mention, i have a foot peddle extension cord so i can keep both hands on the pot and ball and still turn it on and off. also, when everything is ready to go, make sure your drill is set on forward and not reverse. another lesson learned the hard way, if it's reverse, the screw that holds the pvc in place will unscrew itself. hence the foot peddle for easy and quick stops. if you do try it, my suggestion is use an old ball just incase of a stafu till you get it sound and you feel comfotable with it. good luck to all.