GREAT explanation Richard. That's exactly the way I understood it too
(and why I am trying to be pretty careful with my ramp rates). If you
ramp up too fast then it could cure before it has a chance to get rid
of the voids. I'm not exactly sure what happens if you ramp up too
slow but it must be a bad thing

Also, if I use a bladder I'm assuming I still have to use breather
cloth so that the air has a chance to go somewhere? If so how do you
keep the prepreg from "losing" some of the resin to the breather cloth?
Should I use a peel-ply that breathes the trapped air but still
doesn't allow the resin to get lost to the breather cloth? Is there a
peel ply that is stretchy enough to expand when the bladder expands?

Good discussion folks, we're all learning lots.

Joe