There are many ways to make a resin mold for a #resinpour . I find a piece of melamine or wood covered with packing tape and furniture wax. I placed the cypress wood on the melamine and used my brad nailer to secure 2 boards to each end of the table. Then I used silicone caulk to seal the river on both sides and at each end. I plan to use epoxy resin from @pro_marine_supplies along with glow powder from @artnglow . Stay tuned for future project updates.