... straight. 2,The slotting angle can be adustable 3,V groove Purpose And PerformanceGrooving Machine for cardboard slot1,Environmental protection, no ... dust, also the wastage can be recyclable.2,Effect:The groove is very smoothly.3,Convenience:this machine is very easy ... need using cleaner and air compressor machine. Parameter of the groove machine Type LS-1200A Number of slots(most ) 8slots Speed40m ...