I would wipe them down with a wet rag to remove any metal dust first. If it's very small particles it may come right through your shop vac...
The waxy stuff might come off with solvent anyway, rather than such a crude attack as sanding.
I wouldn't think 2" mahogany would have troublesome resonances for speaker applications, as was implied above. Heavier'n'shee-it!
The waxy stuff might come off with solvent anyway, rather than such a crude attack as sanding. I wouldn't think 2" mahogany would have troublesome resonances for speaker applications, as was implied above. Heavier'n'shee-it!