I shaped and glassed a board late summer or early fall and never got around to finish sanding it. I pulled it out the other day and threw it on the racks to finish it up. When I set it down, I noticed it was teeter tottering a tiny bit on the racks. So I picked it up and looked down the board from the tail. It’s twisted slightly. Now I’m no pro shaper, but there’s no way I would have ever glassed a board that was off like this. The tail and nose are still totally symetrical, but it’s like a wood skateboard that twists over time. It’s twisted maybe 1/8" or 3/16" from end to end.
Has anyone seen this?
I will say one thing. My shaping bay isn’t insulated, and it’s been freezing here very consistently for about a month. Do you think that has anything to do with it? When I go shape, I crank the heat, but when I leave, it gets cold again. Does the drastic hot and cold fluctuations make a foam board twist? I can see a stringer twisting, but a fully glassed board?
after glassing boards will have flex but not the ability to twist, even in that cold of weather.
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Incorrect. If the board was stored on unlevel racks, it WILL twist. This can be avoided by storing a board using three points of contact. The board will lay in one plane, and will not twist. One of my ''secrets'' from the late 60's, as boards, foam, and stringers got lighter and lighter. (weaker and weaker)
someone once told me you could clamp/strap a twisted board to level racks or a rocker table and leave it for a few days to get the twist out. Never got around to doing it on the one that twisted on me…would this work??
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Bill, someone once told me you could clamp/strap a twisted board to level racks or a rocker table and leave it for a few days to get the twist out. Never got around to doing it on the one that twisted on me....would this work??
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The short answer is yes. In some cases you'll have to slightly ''over correct'' to allow for some ''springback.'' Every case will be different.
Excellent info, thanks guys! I think many of us have encountered this issue. I have a couple of old LB blanks up on a shelf (not the best way to store) and won’t get around to them until summer. Bet they’re twisted for sure, and I’ll bet this process will take the twist out even better on a blank vs. a glassed up board. Now I have another use for the rocker table I made for making a HWS.
Hey Bill, I’ve noted the two detailed forums regarding warped or twisted boards.
My question is: will a warped or twisted board get worse if not rectified?
Just purchased, another, second hand LB; its poly and salesperson advised of a swall twist (starboard side nose lift off centre of around 1/2"). He priced it accordingly. Haven’t ridden it yet, so dont know if there would be any noticeable issues with it. But, don’t want to take her out if twist will get worse if not corrected. Cheers
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My question is: will a warped or twisted board get worse if not rectified?
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Goose,
Most likely not. Exposure to heat, and torsional forces, are the usual suspects. I would defer to Jim Phillips for the definitive answer on this topic. I've seen him pull off some amazing reversals of propeller distorsions of older boards that had been stored incorrectly.