How to Turn Milk to Stone. Crafts makers may find "milk-stone" great, inexpensive fun. Have fun with plastic/stone. Called Galalith, galalithite, or Erinoid (in UK) or "milk stone", invented in 1898 and used up through the as plastic.
How to Dye Leather in 5 Easy Steps. (Step 5 should be to buff the surface until no more excess dye comes off, before sealing the leather). We don't dye all of our leathers, but we have dabbled in the past.