Review on 🎨 WXJ13 30ml Plastic Graduated Cups: Transparent Scale Cups with Wooden Stirring Sticks - 50 Pack Bundle for Paint, Stain, Epoxy, Resin Mixing by Carmen Peterson

Like the other reviewer I had to mix 50% resin hardener and another 50% formula. I poured into one of the cups and it "looked right". All artworks were ruined because they weren't properly 50% filled. When I poured the amount into one cup (15ml) and another 15ml into another cup they were supposed to add up to 30ml but the measurements showed I was short of 30ml by about 10-15ml. I should start measuring this way with 2 cups instead of one. waste of money and time. This is incorrect because the cup expands at the top and the dimensions are "equal" measured with a ruler, but not liquid.