ORIGINAL: davidfee
Branded,
Check post #26 above, where I discuss my experience thinning epoxy (Jeffco 1310 L-6 / 3102) with "denatured alcohol" from the drug store. I was glassing a balsa-skinned foam core wing with 0.6oz fabric. The solvent did not evaporate quickly enough and, in my case, the epoxy stayed gummy for several weeks, so sanding and filling was greatly hindered.
-David
I have built many models, perhaps 100+, with .6 oz glass using thinned epoxy. David...you did not mix the epoxy properly or you did not use products that are compatible with this application.
I use West System epoxy (105) resin and 205 hardner. I've never had any such problems. Many experienced modelers such as myself do the same and never have any problems. We are not inventing a process here. This process has been in use for many years.
The problems you experience are obviously due to your own inexperience and ignorance. Sorry, but that's what I see here.