Generally speaking,the blade of shearing machine has 4 edges,but the engineer tell us today it has 6 edges.in the bottom,there are 4 edges,in the upper side,there are 2 edges.then,another concern is how soon to change the blade edge, we advise to change per 3 month. that is to say that one blade can use 18 months.So,if you have no enough money,it is not necessary to buy spare blade for this cutting machine.

In the former news,we once advise not to grind the blade on your own,now,we would like to confirm again.after all,the blade is not expensive after you used 18 months.it is better to buy a new one for your shearing machine.