"Gerry" wrote in message
...

The Norton wheels (aluminum oxide) are pretty good, good enough that you can
quickly dress them to run true radially. Mine, on a Delta 6" variable-speed
bench grinder, don't have any significant side-to-side irregularities.

I use the dry grinder for the initial shaping of woodturning tools before
committing them to final sharpening on a wet wheel, so I want them running
pretty true. I've taken the further step of mounting the dry grinder wheels
on bushings that I get from Craft Supplies USA
(http://www.woodturnerscatalog.com). Here's a link:
https://www.woodturnerscatalog.com/p...et?term=raptor

One thing you should do before you blame the wheels is check the shaft on
your grinder for its own runout.

Tom