: Am in the midst of 'glassing and had a batch of epoxy kick off
: earlier than expected. (Operator error? Three other batches,
: done right before and after, went fine.) The thickening epoxy
: didn't wet out the cloth in spots, but hardened over it before
: soaking into the fibers. Can I fix this by sanding down to
: expose the unfilled weave of the fiberglass and re-applying more
: viscous epoxy, or do I need to remove the fiberglass entirely
: and patch the areas involved?

The epoxy didn't wetout to the wood/it's not adhered to the wood? If so - I suspect that glass has to come off, re-do. But before you tear into it, get some more opinions here.