... Mix some collodial silica with the epoxy to thicken it up, make sure to dig out any loose stuff and tidy up the glass before you get it on there.
Good advise !!
instead of the silica ; use West systems 404 , high density filler , instead ,(it's Stronger).
http://www.westmarine.com/buy/west-syst ... 20_004_013
just before you mix in the filler, and After you mix the epoxy ; get some of that
runny, clean epoxy, down into the crack, and press it a bit , (several times) with your
fingers, to get it circulated throughout the entire damaged aria
soak up as much as possible with a paper-towel, to leave just a slight wet look
to your work aria . Now mix in your filler, and do your repair.
to do this job proper-like ; you will Need Beer !