How deep can I cast with this product? How do I add layers?

We recommend pouring ProPour Castin Resin in up to two-inch thick layers at a time - pouring in one-third increments - using a torch between pours to remove any air bubbles to ensure crystal-clear results. Additional layers should be added before the prior layer cures fully (at the “firm gel” stage) to allow for bonding between the layers.