Originally Posted by kendall
Ken : Talc is one of the fillers it is considered a premium filler. A premium product with 100% talc typicaly cost 4 times as much as regular bondo. It is twice the money for a can half the size . However for filling small inferfestions it is well worht the extra expense it cures fast 5 minutes as apposed to 20 and it sands easily with less loading of the sandpaper. A premium bondo such as evercoat would be excelent for filling inperfections in fabricated steel assemblies that are being painted.
Water would be OK for a coolant on a marine grade bondo . Automotive bondo uses filler that absorbs water. that could be a problem if filling holes with more bondo or painting.
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