We use a rotary truing device for our CBN wheels and leave them mounted, but also use a dressing stick to kind of remove a glaze or open up the grain after use. Last time I got one (dressing stick) was probably 15 years ago. It was about 1" square and maybe 4" long, white, and almost feels like an aluminum oxide grinding wheel. Any help on where to get such a thing? All I have left is a nub.