(PeteCresswell) wrote:

Water weeping from the seam?

That's possible, as it would turn uncured epoxy milky.

Contaminated tape?

Possible, but unlikely unless it was laying around or you cut it on an
unclean surface.

Something else?

Air bubbles. Squeegeeing too hard can drive micro-fine air bubbles into
the resin. Your technique will dictate whether that's even a possible
cause.