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Old 01-16-2022, 09:58 PM   #41
Zach
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The fiberglass looks great on there. I hope the sanding will go smoothly. What is the paddle weight difference between fiberglass and no fiberglass? I'd like to try it on my next paddle, but mine are already around 3 pounds, as I recall.
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Old 01-16-2022, 11:08 PM   #42
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Thanks, Zach.
Uhmm...let's say I have approximately 160 sq in of 2 oz cloth per side, that's 2 oz/sq yd, or 2 oz/1296 sq in. So 160 sq in of cloth should weigh 0.2469 oz. I know I used 1 fluid oz of RAKA epoxy resin, that weighs about 9 lbs/gal, so 1 fluid oz of that resin would be 0.070 oz.
I glassed both sides of the blades, so double all of that...(0.2469 +0.070)*2 = 0.6338 oz.

I'm pretty sure that the paddles are actually less than 160 sq in, and the 1 fluid oz of resin per side included soaking a 1" disposable brush. Guessing at all of that, I would say the cloth and resin added at least 0.5 oz, but likely not more than 0.7 oz.

Not much additional weight, most the weight of the paddles is dominated by the wood.

Hey, wait...was that a pun? (I hope the sanding will go smoothly) Pretty clever.
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Old Yesterday, 11:02 AM   #43
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Four decimal places is a high level of precision. It sounds like the glass would be a negligible addition to the overall weight, and I could offset it by partially hollowing the shaft with a router bit before epoxying the two 1x2 pieces together. I imagine the glass goes over the phenolic tip, or do you not wrap it around on the end, just on the sides? I guess a pun is in the eye of the reader, at least when written down.
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Old Yesterday, 01:28 PM   #44
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Zach,
I only wrapped the sides, and overlapped the phenolic tip.
Nothing on the bottom of the tip,
I like your idea of a hollowed out shaft
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Old Yesterday, 02:29 PM   #45
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Thanks, that makes a lot of sense. The phenolic tip is another of your wise ideas that I'd like to borrow next time I make a paddle. I think that the double paddle is less likely to run its tip into underwater things by mistake than the single paddle, but I do use the end to fend off things sometimes in an emergency, and it gets a bit dinged.
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