Well after about a 35 year absence I am getting back into RC airplanes. I posted about " Building in a hot shop" and it has not been a problem for me. Thought I'd share a couple of photos. Yes, a couple of opps moments. Worse was not properly securing wing flat when sheeting. I got a 5/8" wing tip difference. That took days to correct. I now have it at 3/32". I may have to leave like that. I've been to a couple of clubs and no one builds any more. It is ARF or RTF.

Last weekend I attended a local RC show. I got to fly an Ugly Stik. I did not do too badly but but still managed to lose control a few times. Airplane flying toward you was interesting. I now have an iPad app simulator and that issue is somewhat resolved.

My plan is to get a Futaba T10J with S 3004 servos. Still researching this but need the servos soon. Anyway I have been enjoying this building adventure.

You can also remove some of the warp with your covering. Good Luck, DAve

Dave, that will be my last attempt for the fix. Other than this warp all seems to be going well with this build. I have learned a lot reading this forum.

It shouldn't be too difficult to eliminate the wing warp. You basically have a "D" tube wing design, except I don't see any shear webs between the spars. Shim the wing flat or with what ever amount of wash-out you want, then glue a vertical web to the back side of the spars between each rib, using 1/16" balsa. That will make the wing structure a D tube which is very resistant to further changes.

Yesterday I had to do some workshop cleaning. I rolled my building cabinet outside in the sun. The wing was shimmed, weighed and clamped. Later in the day I measured and found I was now 3/64" off. Looking better.

HighPlains, I do have sheer webs glued to front of spars. Just not visible in photo. I will take your advice and secure wing n add the rear webs. This will make it a box spar. I keep the wing weighed and clamped so maybe the last little bit will work out. Then I will keep it flat. Thanks for the tip.

I had a good supply of old lawn mower blades 1/4 x 2.5" off a 6' mower deck. I cut these into different sizes. They make good weights for model building IMO. I just need to paint them as they are showing signs of rust. May add some glue on felt to bottom.

Well, I am happy to report that the wing is straight arrow again. It took steam, water, windex, shimming, clamping and I believe heat from the sun and my shop. It also took a lot of time. I am keeping that wing flat until covered. Happy camper here. Now I can move on with the build.