I have a polishing motor that is on its way out. I either need a
new 1/3 horsepower motor double spindle (18" wide) to use with the
table top dust collecting cabinet that I already have, which is
20.5" wide, OR I need a table top dust collecting cabinet to fit
another double spindle motor that I have in storage that is 21"
wide, so the cabinet would have to be at least 24" wide.
I have had the same thing happen to me a few years ago and I
replaced it with a 1/2 HP grinder from Harbor Freight that I got on
sale for around $25. You take off all the guards and grinding wheels.
The shafts are threaded but they work the same with the tapered
spindles or maybe you will want to replace the spindles with the
threaded type. If you are going with your old spindles you will also
want to grind a flat spot on the shaft so the set screws on the
tapered shafts have something to lock on to and screw down flush on
the tapered spindle. I didn’t do this at first and was constantly
nicking my knuckles on the exposed set screws. It only took a couple
years and many Band-Aids to get around to it but I eventually
got-r-done. The Harbor Freight grinder replacement has been working
Most of the lower end polishing motors are the vented type and all
the fluff from the buffing mops gets inside the motor and causes
Silversmith and Lapidary Artisan