... machine is special designed for notching V type groove, use for industry-cardboard, Ash-cardboard, ... machine is special designed for notching V type groove, use for industry-cardboard, Ash-cardboard, MDF ... The diameter is 60cm), It can guarantee the groove more accurately, no deviation and straightly. The machine ... degree is adjustable.6 .The machine could groove any thickness from 0.5mm-4mm,and need ...