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Hi OG,
There is a wonderful book called "On Divers Arts" which was written in about 1200 AD. It describes many vegetable and mineral based stains like madder, logwood, saffron, , cinnabar, etc. It also describes using nitric acid-based stains with heat.
dave
There is a wonderful book called "On Divers Arts" which was written in about 1200 AD. It describes many vegetable and mineral based stains like madder, logwood, saffron, , cinnabar, etc. It also describes using nitric acid-based stains with heat.
dave