Review on 🎨 100-Pack of Pint (16oz) Paint Mixing Cups with Calibrated Mixing Ratios - Custom Shop by Heather Shaw

First of all, if you're using West Systems' epoxy, note that they use a 5:1 strength, and these mugs do NOT have this (at least in the 12-pack I bought). Also, as someone else said, the volumes aren't too accurate. I figured the best thing would be to take the mug I'm about to use to the kitchen, pour water in it, and mark each tier with a sharpie. Only then can you be sure that your concentration is right. Yes, it hurts, but it works. However, they boil down to regular heavy-duty plastic cups that (#1) have a flat bottom to ensure good mixing, and #2 don't melt when the epoxy cures.