Rough sanding is normally not necessary when bonding to a part made with Vinyl Ester, using Vinyl Ester. That is why Dan uses it, because it is a laminating resin". It never completely cures, so another application of Vinyl Ester will really bite into it causing a very good bond. That is why you should, read that MUST, use Vinyl Ester when bonding your wing skins to the spars.
Now having said that, Dan did tell me that if I rough sanded the ailerons that he made for us using the same process as the wing skins, that I could get away with using an epoxy resin, and that is what I did. However, even thought I really don't like Vinyl Ester, for that application, I would use it. I wrapped the aileron to the false spar, just to be sure. See N64KR at http://KRBuilder.org - Then click on the pics See you in Mt. Vernon - 2006 - KR Gathering There is a time for building and a time for FLYING and the time for building is OVER. Daniel R. Heath - Lexington, SC -------Original Message------- I'm told that since the skins are made with vinylester resin, that only a vinylester based glue should be used. Dan Diehl apparently sells this to builders.

