Jon Elson wrote:

It is a Chinese 24 x 36 x 4" black granite plate, and yes, it
has some spotting compound on it. The bottle of red Canode
spotting dye is visible on the right side of the plate. I use
that instead of Prussian Blue because it easily washes off the
hands, etc.

Where have you been buying your spotting ink at?

Sorry about your back and the next time my uncle makes observations on my
shop conditions, I'm showing him your picture

Nice stand btw.

Wes