Hey guys. Makin another bass. This time, doing the pre-finish prep myself... The body is mahogany. The question: I have bondo at my cab shop. Has anyone ever used this as a grain filler? I'm doing an opaque finish, so the green showing thru isn't a concern. In fact, the color I'm having it shot IS green, btw... Thoughts? It's free, it's quick hardenning, easily sands, and doesn't shrink. prop pro pro pro? Thoughts?