Building my Sig Spacewalker II wing again after it had been sitting on the bench partially completed for the last two months.

I noticed I picked up a couple of pretty good warps in the outer areas of one wing. I usually weigh down the wing then thoroughly wet down the leading and or trailing edge skin with alcohol and let it dry (it works) but thought I'd try something different this time.

Think I'll soak the outer 1/3 of the wing in a bucket of water for ten or fifteen minutes then weigh the wing down on a flat bench til dry.

Crazy? That'll work? or some other idea?

Thanks

what glue did you use - waterproof?? And I believe a quick dunking would work. I have used a spray bottle and just misted the top and bottom which worked well.

I use Titebond III.

When it gets right down to it I'll probably revert to the old tricks (such as your water bottle idea since it'd be safer).

Go with what you know!

Steam is the only other thing I'm familiar with, but may be a bit unmanagable for larger panels. Unless of course a steam room were available, then the whole panel could be "soaked" and then weighted down to "re-cure." Without that, I'd give your alcohol and/or bucket soaking method a shot. Worst case I've had- one wing panel of my Astro Hog came out warped and nothing I tried was able to straighten it. Ended up throwing it away to build another.

I straighten out small warps with the covering. I quit using wood glue for sheeting too, it seems the water in the glue causes warps?? That's what I'm seeing anyway, as soon as I started using the wood glues I started getting warps, I went back to CA and all is well again.

The only problem with that (in my case) is that even a minute amount of CA in the air causes the sniffles, itchy eyes, etc.

I wonder if Ambroid (from the world of ancient people) would cause warps? I can't remember, been too long ago.

Don

If the warp is bad I would probably make a jig to hold the wing in a position where it is bent true and then beyond a little and hold it there and apply heat from a paint stripper or covering gun, LOTS of heat. Be warned that dipping it into a bucket of water may cause other warps that u don't want. Use a sprayer. Have a hot iron filled with water close by so u can apply steam to the worst places. Let it sit untill cool, an hour or two. Remove from the jig and check it, let it sit for a bit and check it again, repeat if it warps back, do it over and over untill the warp is gone and it is holding it own true.

Also like gray beard says, twist out minor warps with the covering and a heat gun. ie: force the warp out and use the heat gun to shrink the coering while yer holding the warp out.