 What kind of coverage can I expect? Our resin self-levels at about an eighth of an inch when it's on a flat surface. So as a general rule of thumb, for every four ounces of resin hardener mixture that you have, that should cover about one square foot. To make the math simple for you, we have a resin calculator at our resin.com slash calculator where you can simply punch in the length and width of your piece and it will tell you exactly how much product you need, as well as make a recommendation for what size kit makes the most sense for you. One little tip, when you're measuring your art resin, it's always better to have a little more than not enough.