At the exhibition at Alexandra Palace I bounght one of the small diamond cup wheels from RDG with a view to using it to sharpen carbide gravers.
It is similar to that shown on their website:
Having mounted it on a (ground) 10mm arbor there is a small amount of runout at the wheel (3 thou or so). If it were a normal bonded alumina/carborundum grinding wheel I would simply true up with a diamond dressing tool.
Is there a similar procedure for these wheels which anyone could point me at?
Alan