I'm bashing a CMP 140 size P-51 and have been watching the work you guys have done with this plane with great interest. I've held off on glassing the wing and had been leaning toward using water based poly to do the wing. I've used the thinned Zpoxy method before on smaller parts, but not a whole wing. My question is, do you have to pretreat the wing with anything before you use the thinned Zpoxy method? The reason I ask is I am very afraid of warping the wing. I've put both thinned Zpoxy and water based poly on test balsa and both methods have caused the balsa to curl up a little. When usng the poly method you definately need to seal the wing first with a few coats of sanding sealer.
Tim
My bash:
http://www.rcuniverse.com/forum/m_55...tm.htm#5509593
ORIGINAL: Vintauri
ORIGINAL: ReaperGrim
ORIGINAL: Vintauri
Here are the pics of my wing glassing in progress. It's a bit cold in my shop and I think I need to thin out the Zpoxy on the second coats so it smooths out more.
You should never add a second coat of resin if you want to build a light plane, it's completely unnecessary and a lot of extra work.
See page 29 post #711 for the lightest and easiest epoxy resin system I know of: [link=http://www.rcuniverse.com/forum/m_2530290/mpage_29/key_/tm.htm]Click Here for the lightest finishing system![/link]
Hey you learn something everyday. I looked all over for tips on using Zpoxy but I didn't look hard enough and it was in this very thread. I'll be looking for some bondo putty this afternoon once I get off work.
Steve