I'm not sure if this is the right forum, but I'll try it anyway. I have started the building process on my DasPlasStick and I was wondering if it would be okay to use 4mm coroplast for the top and bottom part of the wing since I cannot find any 2mm coro for the top wing. I hope its okay because I already but the wings out, but I didn't glue them in place because of this question. Also, when I put the CA on the yard sticks, do I have to immediately fold the wing over so it sticks, so the glue does not dry too quickly. It feels like I will not have enough time to apply glue fold and stick the wing down in the amount of time that the CA dries in. I would appreciate some tips on how to make this part go smoothly.


Thanks
Mike

An all 4 mil wing will be fine. It'll be just slightly heavier is all.
I use medium CA when gluing the top half of the wing to the spar. Thin CA soaks into the yardstick too fast to get the top folded down. You still have to work kind of quick though. The best thing to do is do a practice fold and hold, with no glue so you can get an idea of what you need to do. If all you have is thin CA you can tack it down and then put the wing on it's end and run a bead of CA down the spar. Just make sure you have something besides your foot or new carpet on the other end of the wing.

With a 4 mil wing, you will probably need 2 spars instead of one. If you only put in 1 spar, the top 4 mil will tend to crease at the spar, making an almost triangular airfoil. If you end up with this, it will probably have very poor low speed characteristics. Add a second spar about 3/4" to 1" back from the first and it will help that tremendously.

As far as glueing and folding. Do all of your folding first. Score your fold lines and fold the entire wing over into place. Like AtomHeart said, make a few practice runs first before you apply the glue. I would definately use medium CA and you would be surprised at how much time you really have. The main thing is once the two halves touch together, try not to let them move. You want to give it a couple minutes or so for the glue to set up before anything moves.

Hope this helps
Frank

You can order 2mm Coroplast (and all other thickness) in different colors at www.harborsales.com