Depends on the temperature. If you let the epoxy harden-up enough that it is not tacky any more and then crank-up the heat to over 100 degrees, then you can have it cure overnight even with a slow-cure type hardener. I've done spot repairs this way with an electric heater under the area and I measured 120 degrees inside the boat - it is rock hard the next morning (8 hours at best). In contrast, it takes good 24-36 hours at "room" temperature to get near that hardness with the same materials...

You don't want to crank-up the heat while the epoxy is still wet and fluid though - you will likely get more bubbles if you do.

: i'm almost done fiberglassing the hull on my strip kayak. Nick's
: book states that you should let the fiberglass cure for
: "several days" before removing it from the forms. Is
: it going to hurt anything if I remove it after an overnight cure
: so I can start on the deck? Thanks for all the help.