From: "Jim Nordin" <panelmaker@earthlink.net>

Hey Larry,

You are correct. 1/4th gram epoxy per square inch of material. The material
is the material supplied with the 320 FB kit and I assume yours to be the
same. If not adjust for the difference in glass weight.

I think it works best for small layups that you use slightly more epoxy to
glass ratio. And as you get past that 3rd layer of glass in a layup you can
cut the ratio back to .20g/in^2. You just have to be diligent in seeing that
the lay-up is not too wet or dry. I roll the wet layups until the
glass:epoxy ratio looks acceptable ... you know, when the layup is cured
there is no shiny surface but still epoxy is seen in the entire weave.

I didn't like the inconsistency of the pump. I built a LongEZ using the pump
and all came out fine. But sometimes the pump doesn't pump just right so you
make a judgment call on what was short in the mix. That didn't set well with
me so ... I weight all my mixes now and use 100:22 by weight as described in
the Jeffco literature. Small mixes tend to be rich in one component or the
other depending on the significant digits capability of the scale. My scale
resolution is 1g. I generally err on the hardener side.

Hope it works for you as well as it's worked for me.

jim