The UV cure resin is a laminating resin but can be sanded. It is recommended to add Surfacing Wax for a shiney and easily sandable finish. Also if filling a deep ding with Q-cell powder, mix MEKP catalyst in with the resin for full cure as the sun's UV rays may not penetrate all the way through. For UV resin to cure it must be exposed to the sun's UV rays. UV rays bounce off the ground (concrete is best) but will cure faster if exposed to full sun.