: I'm not familiar with MAS epoxy and slow hardener. Do you know how
: long it was before your wet-out glass was tack free?

: Did you squeegee off excess resin after rolling on the resin to
: wet-out the glass?

: Rob

I finished up on the glass work about 1pm and applied the fill coat about 6 or 7pm. I didn't check it but maybe once in between so not exactly sure on the tack free time. I do use scales to get the exact ratios if that's maybe your thinking. I'm questioning working at 85-80 degrees as a culprit. I have in the past preheated epoxy to 90 before working with it but never messed with the room temp. I'm wondering if at those temps I'm getting a much quicker kick.

I do not use squeegees for any part of the process. I apply liberally with the roller working on about a 2'x2' area going over it enough to wet out the glass and even out the coverage. I try not to work it too much or too fast so as to avoid foaming. I also try not to apply to much pressure to the roller and work as wet and light as I can. When I stop with that area there is more resin in the foam roller but I avoid trying to stretch it out by applying more pressure. If I was to squeegee after I don't think I would get much if any.

I'm not apposed to going to a squeegee. I have done that. I just found rollers to be less messy and avoids the need to both apply and scape off, but that's maybe what I need to do. Most of my FG work has been with competition r/c gliders using carbon fiber and Kevlar. Very light layups. As in 12' wingspan gliders that weigh 54oz total with batteries and radios and can take 500lb loads. Maybe I've just gotten too used to near starvation layups.