You need 2 M3 bolts with length 1/2" or 15mm, two lock-nuts and four washers. To protect the board from the underside, cut out some clear plastic the same size as the board, make holes for the bolts and place it underneath. | You need 2 M3 bolts with length 1/2" or 15mm, two lock-nuts and four washers. To protect the board from the underside, cut out some clear plastic the same size as the board, make holes for the bolts and place it underneath. |