Should you sand between flood pours when using Promise Deep Pour Epoxy Resin?

Pouring layers of Promise Deep Pour Epoxy Resin may be accomplished in one of two ways; either by adding another layer while the prior one is still in its gelatinous pre-cured state, or if the previous layer is fully cured, we recommend sanding a bit before pouring the next layer to give the newly added resin a surface with which to adhere.