Wondering how long you have working with a product like MAS slow epoxy (tends to kick in the cup in about 10 minutes when is above 80 out) where you can still get a good wet on wet bond. I have heard of using a cotton ball and if you dab it on the glass and it still pulls some of the cotton off then your good to go?

10 mins are you sure you have the slow hardener ? sounds more like the fast stuff ?