this is an old thread, but I'll ask here first.
My black tiger was covered with butyrate and silk. I cracked the wing, stripped it, repaired it, and now am ready to recover. The wood does have oil penetration. Not a huge amount, but enough to make it feel a bit gummy. I tried sanding it down to 100 grit, but it barely scratches through the gum. I can buy K2r on amazon. Acentone is also recommended. Do I just spray it on, then wipe it down? I suppose I could try a few methods on a few sections. I'd like it to be clean enough to apply ultracote on my refinish. Just looking for any tips before trying chemicals.