ResinBatch helps resin crafters and woodworkers estimate mixed-mold batches, tabletop coatings and river-table cavity volume in metric or US units. A separate mixing-ratio calculator splits a known weight or volume according to the product’s instructions. Free printable plans, CSV exports and worksheets are available without an account. Save mold-batch projects on your device or share measurements by link. Follow your resin manufacturer’s instructions for safe pour depth and batch size.