Sam Hayes Merritt, III wrote:
basskisser wrote:

I'd bet it's true. Walnut shells are a great cleaning medium and are
used a lot.

Some show had a thing about them being used for sandblasting. Something
about how they can get them the coarseness they want and they aren't near
as destructive as actual sand when blasting.

sam

One of the finest hand cleaners I've found is Snap-on "Nitro Gold" it
uses finly ground walnut hulls for a grit media, instead of Pumice, or
sand. it doesn't clog up your drainds either.....