Safe is a solvent, weaving looms and carding machines, needles and other metal parts used in cleaning the unwanted fat. Oil, wax, asphalt, glue, ink and other residue removes stains. Corrode the metal. Hard plastic, rubber, paint like substance is applied on the insulating material does not hurt a lot. Although it is certainly a very powerful degreaser solvent is not flammable, and burning. It does not leave residue and residue.