Brew some "vinegaroon." Spray fine-grade steel wool with water and allow to rust for several days to a few weeks, rewetting the material daily. When well rusted, put the steel wool in a jar and cover with boiling vinegar. Let steep several days. Longer steeping time and rustier wool will give you the darkest color. Mix vinegaroon with a small amount of commercial leather conditioner to make it easier to apply to leather. Vinegaroon is a good choice f
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