Question: How do I smooth the edges of the board ?
Option 0: Use a sander with 120 grit paper, you might want to use a drill with a sanding attachment for the holes, or you could also sand it by hand.
Option 1: Use a sandblaster at 120 psi, you might want to use a drill with a sanding attachment for the holes, or you could also sand it by hand.
Answer: 0