Leo Lichtman wrote:
"robobass" wrote: .(clip) 3. Mix up the epoxy. Vacuum the mix if
possible.(clip) mix and vacuum a new pot. Make sure the tray is level. Put
it in a pressure vessel if you have one(clip)
^^^^^^^^^^^^^
I have heard of using vacuum to pull bubbles out of a resin mix before it
cures, but the idea of using pressure is new to me. Is the purpose of
pressure to make the residual bubbles smaller while the resin cures?

It makes bubbles smaller (or disappears them) but I think the main
intent is to more-completely fill the mold. Note, vacuum bagging
(for fiberglass) is a way of applying atmospheric pressure to a
molding, to prevent voids and holes and tighten the structure.

Why didn't I think of that?

Probably for the usual reasons.

-jiw