Posted by Moises Carrasco on August 12, 2001 at 18:52:34:
In Reply to: Black stuff on a new tuba posted by Andy Smith on August 12, 2001 at 18:43:06:
Congrats on your new horn! That black stuff is most likely buffing compound. Try cutting it with "Simple Green" (from the grocery store) which works pretty well as a de-greaser. If this doesn't work, then you'll need lacquer thinner (hardware store) which is somewhat riskier. Make sure to use it in small quantities in well ventilated areas. Also, drape the used rags and let the thinner evaporate - don't ball the rag up and throw on the trash. Cheers!
Moises