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I'm finishing a restoration on a wooden juniper jon-boat. Could anyone help me with the best way to seal the bottom to the outside of the frame. thanks
I have used laquer, varnish, porch and decking enamel and etc. as a wooden boat sealer many times. BUT The boat that I am now working on will be sealed it with fiberglass resin. The resin can be thinned and painted on the fresh wood just as paint or laquer. I will put it on thin so that it soaks into the grain. It dries fast. Can be lightly sand it in between coats and finished the same day. I will color the resin (green) before using it so that I will not need to paint my boat. I am going to coat the inside first then roll the boat over on to supports covered with plastic. As the inside is drying I will coat the outside. The resin will run into the cracks and act as glue and filler for the very fine cracks between the ribs and etc. If I need a heavy filler I will mix glass beads (the kind used for blasting) with resin and putty that into cracks as needed. My boat is made of unfinished ply wood and I do not plan on using any fiberglass matting over the seams. If I decide to seal a seam. I will go to walmart get green nylon mesh from the fabric dept. Place it over freshly applied resin partly cured but still sticky. Cover the entire surface with wax paper and by rubbing on top of the papper I will embed the cloth into the resin. Add another light coat. Lightly sand, recoat and bingo. Light wieght, sealed, colored and ready to go fishing. Sealed,Painted and fishing the same day. Can you beat that idea,smile. Chief
Down here in Puerto Rico the locals make small wooden boats for fishing in the rough ocean with a flat bottom, they are called "Jolas". They take a sheet of fiber glass tack it over the bottom about half way up the sides all away around and then they pour resin to the fiber glass and let it cure. It makes a good strong water proof bottom for the boat.
You did not say whether or not we are are talking exposed grain or not I assume that we are. I would use several coats of clear laquer. First use a really good wood sealer, spray and sand several times. then use anywhere from 4 to 10 thin coats of clear laquer sanding lightly with 320 grit paper between coats. finishing with 600 grit then a final flat coat to finish. allowing plenty of time between coats for drying before sanding and applying next coat.
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