Remember that filler is porous so you'll need to use red oxide primer underneath it (in case any moisture gets through the topcoat).
You could also use molten lead, which is what they used on cars until the 1960s.
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Remember that filler is porous so you'll need to use red oxide primer underneath it (in case any moisture gets through the topcoat).
You could also use molten lead, which is what they used on cars until the 1960s.