Subject: Dry Rot in Jacobs Windcharger Propellers
Date: Wed, 17 Jun 1998
I've got a 10 Kilowatt Jacobs Windcharger that has 3 propeller blades made of spruce. Dry rot has started at some of the glued joints in the blades. I want to kill the fungus, fill in the holes already formed and make the blades structurally sound. What kinds of epoxy should I use?
Pretty simple, really. Assuming the bad wood is dry, apply 1 coat of the
Clear Penetrating Epoxy Sealer (CPES), allow it a couple of days to
cure, apply another coat, allow another couple of days to cure, and then
go back and fill any cracks or crevices with the Fill-It Epoxy Filler.
Allow that 24 hours to harden, sand it smooth if you need to, and your
props are good as new. You can also use our thicker Layup & Laminating
Resin, with or without additives, as a filler. Kind of depends on what
kind of fill holes you're looking at.
Strongly suggest as well that if you need to re-glue joints, take a look
at our All Wood Epoxy Glue. It's as strong as glue gets. If you use it,
apply FIRST before using the CPES. Must be applied to a clean, dry wood
surface. It's thick and a good gap filler.
Ideally all epoxy applications should be coated with a UV resistant
final coating, like a clear polyurethane (with UV inhibitors).
Marine-grade spar varnish will do well too.
Come back if you have more questions.