I figure on six per quart set, but like Apex, I tend to overmix. I always line up anything else in the house or shop that needs gluing to get at while i have the stuff ready. The layup I just finished also saw a chair repaired and my javelina skull mounted on its display board. I also hate the very idea of running out mid-layup. Out of 30 runs, that's only happened twice. I usually have some left on the palette to dry out and throw away. I don't use the tuna can, just a one foot square board. I use a wallpaper roller to apply and the palette makes it easy to use the roller.