How we build the perfect form for larger epoxy pours: 1. Use HDPE (High-density Polyethylene) as you base and sides. You can also use plywood and Sheathing Tape. The cured epoxy doesn’t stick to HDPE or sheathing tape. 2. Run a bead of silicon between the form and the wood to prevent the epoxy from going under the slabs (optional). 3. Run a bead of hot glue on top of your work piece to contain the over flow of epoxy when pouring. 4. Use lots of clamps to keep the wood secure and flat while the p