Messages

Well, to keep up the monologue...

Mr. Hakan Persson of Tormek Sweden contacted me and kindly shared some information on these rubber coated polishing wheels.

I heard that Tormek canceled the rubber wheel from their program during 1994. The rubber coating is filled with aluminium oxide. Alumina grain size distribution is not exactly known but it should be fine grained all the way.

According to Mr. Persson, the best way to true this kind of polishing wheel is to apply a piece of 60...80 grit SiC or ZrO sandpaper, most preferrably attached to a straight piece of some rigid substrate. I glued a piece of sandpaper to a piece of plywood, and it worked just fine as a truing tool. For example a belt sander is not needed at all.

The wheel works now quite well indeed. There is no actual need for adding any polishing paste. A minor amount of common very low viscosity paraffin oil, or some water as lubricant seems to improve the polishing procedure slightly.

Yours,

Samu

I found some further information about that rubber wheel, auf Deutsch. Hier, bitte.

This was new to me that 2000-series has been factory delivered with such a rubber wheel.

Yours,

Samu

Hello,

I have an early Tormek SA-250. It has a factory-made rubber coated polishing wheel, possibly polyurethane coating.

The rubber coating has developed some scratches over the years. Do you have any suggestions how to refurbish the surface?

Is the rubber coating readily loaded with some small amount of abrasive particles? It kinda feels like that, but I can't be sure.

Yours,

Samu