a question for those that don't solder guards

AcridSaint said:
The epoxy in the boat isn't generally getting exposed to UV, it's generally painted, and often several times over it's life span.
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At least in my experience with fiberglass boats, typically the structure is made of glass fiber mat saturated with epoxy and laid in layers, each layer at an angle to the previous. corners are filleted with a thickened mixture of epoxy resin and wood flour, chopped strands etc. That is typically covered with a coat of natural (uncolored ) to smooth it. That is covered with come sort of colored epoxy (gelcoat), usually an epoxy resin with pigment in it, that is sometimes covered with a clearcoat, usually not, at least in my experience (I have had to patch several fiberglass sailboats that had gotten rough handling before I got them)

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the pigments are typically finely divided mineral dust mixed into the epoxy, West Systems even says you can use tempera paint powder mixed into the resin. It's kind of like a thinner version of JBweld (epoxy resin with powdered aluminum)

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Heck, just forge weld 'em on there like Rodrigo Sfreddo. Oh wait, does UV light affect forge weld seams?
 
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