Homemade Sausage Making

Well, I did it again. I left a couple of meat grinder die plates out on a bamboo cutting board, and they stained it gray. This is the second time I've done this. The previous time was on a multi-wood cutting board. Each time, Beloved Spouse reminds me what an idiot I am for doing it again. Each time, I reply that if she left a polymer cutting board out, it would be both more sanitary and non-staining. (...sound of fireworks going off in background. ...or is it...?)

Anybody out there have a suggestion as to how I might bleach the wood, or remove the stain somehow? Water soaking doesn't help. Scrubbing with soap doesn't help. Sanding doesn't help. (These stains are DEEP !) Soaking with vinegar doesn't help. Wailing and gnashing of teeth don't help.

Yeah, I know- - "don't do that." (Tell me something a DON'T know.)

Oxalic acid is a good starting point

Use an oxalic acid solution. Oxalate (LDH) catalyses the conversion of a keytone called pyruvate to lactic acid. The product of the fermentation by an anaerobic process is the coenzyme NADH to NAD+. Whew! Did you get that? What that means is just be sure to rinse it off well before you use the board.
Don't fear my friend, it's the chemical used in "Bartender's Friend" and other cleaners.

Best Wishes,
Chuckwagon

Borax neutralizes.

mmmmm.... yes, and Ex-lax does too!

Chuckwagon,

Your chemistry is amazing. Are you a technical advisor on the AMC show "Breaking Bad"?
I just recently started watching this show and it's great. Lots of chemistry involved. I keep looking for credits for you.

I often asked to remove iron based water stains from oak floors, a wash and soak with oxalic acid solution and a rinse with a borax solution works quite nicely. The details come on the box of oxalic acid that you can get at any neighborhood hardware store.

Ducko.
Use Oxalic acid as the experts advised you. Just do Not treat/clean the cutting board in a stainless kitchen or laundry sink or anything stainless. You'll rue the day you did.
Good Luck,
Jan.