ORIGINAL: Mrs R
My post stated that the weight "NOTVOLUME" of resin should equal to the weight of the cloth in these thin lightweight layups.
This is in an Ideal World but on repairs of model aircraft even we can not achieve and that is a layer of peelply with an absorbent under vaccum.
KNDREGARDS
Rachael
I understand that. My point is that 50:50 ratio by weight with e-glass is a very poor resin to fiber ratio. That's a lot of resin. The density of glass is 2.55 g/cc and the density of most resins is around 1.1 g/cc. A 50:50 ratio by weight translates to the 30:70 by volume. Only 30% of the layup would be fiber. You must be using really bulky fabrics with a lot of crimp. In a less than ideal world you can get a 60:40 ratio (fiber is first) without a peel-ply or a vacuum bag (with the right fabric choice).