Choosing a glass art resin kit starts with surface area. Measure width by height to get square inches, then check the coverage chart for your target thickness. Coasters and small panels typically need thin coats; trays and larger panels may require more volume. Add a ten percent buffer for edges and test pours. Consider pigments, inclusions, and temperature, which can affect viscosity and spread. If you are layering, calculate per layer rather than total depth. Beginners should favor smaller kits and repeat orders to keep fresh stock. Our Kit Finder recommends sizes by project type so decisions feel effortless. Always.