The PL construction adhesive is messy stuff, but seems to dry as hard as epoxy. I guess it can be used for Fillets, but you have to smooth it as soon as you run it, or else it forms a skin and trying to smooth it out after that creates a bubbly mess. On the inside of my boat, I will be applying fiberglass cloth and need a smooth fillet. Today, I will attempt to mix up some thickened epoxy to make a smooth fillet over the top of the bumpy PL fillet that I ran.
On the other hand, it sure is nice having the PL in a tube that can be squirted in between a side panel and a bulkhead, or between a chine rail and and a side panel. Seems to last for a couple of days in an opened tube.
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