Saturday, April 6, 2019

Glassing The Hull

It may be the case that I have already peaked in Kayak Building skills. 😉
Fist discovery this morning was that the roll of fiberglass was not wide enough to cover the hull, even though I thought I had figured it out. A patch was necessary.
I warmed the resin for several hours in a hot water bath. I mixed up 1-1/2 cups, and started working on the stern section. I expected the resin to be warm, but I became aware that it was getting warmer on its own! Surprising, since I figured that the RAKA resin with the non-blush hardener would be slow-curing under any conditions-but I was holding a 16 oz. cup full of mixed resin. Panicking, I immediately dumped it on the hull. It was actually beginning to give off steam at this point. The area where I dumped it had a cloudy, weird look, which I think was caused by the resin becoming too stiff to saturate the glass properly. I thought about ripping it off to start over, but instead worked on it with a hair dryer. Much air came out, and eventually it looked almost right. I decided to live with it rather than to waste that much fiberglass and epoxy.
I went to smaller mixes, and did the rest of the hull with good results.
I did two "generous" fill coats, then scraped & sanded. I hit the fiberglass lightly in a few spots. I made a few minor discoveries. I had been in the habit of trying to skim on very thin coats of epoxy with a scraper, a squeegee, pieces of foam, etc, and always had trouble with air. I found that the Lowly Chip Brush puts a thicker coat on the boat, and for some reason, tipping off the job with the brush gets rid of air. It might be the case that my experience actually messed me up-if I had been slathering a thick coat with a chip brush, I'd have gotten better coats! I hit the glass badly in some spots on the last build, because I had been relying on the R.O.S. too much, and it was cutting off the high spots.
However, after hitting the glass in more places, I opted for two more skim coats of FLAG resin. 

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