Omigosh what have I done?

It seems that hours after using amonia to bend some 3/32 balsa sheet around the wingtips of my Sig Astro Hog that a strange phenomenon has occurred. The wood is bulged out above the surface. This didn't happen to the other wing so naturally I'm cornfused.

I sure hope there is some way to fix this ...

Can anyone offer any suggestions and perhaps an explanation?

Baffled in Fresno.

amonia??? whats wrong with water? its cheaper, maby?
well i would say to pull that part of the sheeting off and try to reset it.
if you uses a water based glue soke it up with water and the sheeting should come up easy after a few minutes, if you used CA get the exacto out and hope you dont mess up!
to reset the sheet try to get it all down using water, there might be a slight curve on the edge but it will be flat, get it really wet and clamp it/pin it to follow the curve until dry then unclamp/pin it and glue it down.
there may be other ways to do it but this is what i would do, and youre not me...

Just cut a thin "pie cut" from the sheeting directly over the rib and glue it down to the rib.

Short of any magical solutions I guess I'll try the pie cut trick. Before I take the knife to the wing is there anyone else with a miracle solution?

I have no idea if this will work, but ammonia does do wonderful things. I would saturate the area with ammonia, stack weights of some sort (sand bags, magazines, etc.) on the bend, and see if you can reshape that area.

Les

the pie solution is the best. its a super exercise on how to use your tools and gain experience. we have all been thru it. boo- boo's still happen to the best of us. dick

I had something similar happen to me on a friends Quickee wing. He brought the airplane over to have it covered. upon initial inspection, I did not like the gaps in the wing sheeting(foam core wing). I sprayed a bit of water on the gap, and filled it with Model Magic. Off to the hobby shop we went to pick out the covering colors. Upon our return, I was shocked to see that the sheeting had lifted. He wanted a light wing, so he went "easy" on the epoxy. I had no choice but to break out the Exacto #11 and go to work. It will be easier to fix than you think. Go ahead and cut it as suggested before. Re-fit it and glue it back down.

I

I just got done finishing my wing on my Astro-Hog, and I use a water-ammonia mix. It turns the wood a weird yellow, (turns normal color after it dries) but after it soaks in really good, you can really bend and compress it. Try that and if that fails, then start cutting

The surgery went well and the patient is recovering nicely. A little 'poxy with balloons and all will be well soon.

Thanks one and all!

Dave