“There are three main areas on a paper cutter that should be checked early and often during cutting: Knife sharpness, knife angles and clamp pressure.
Knife sharpness – These are the five early warning signs of a dull knife:
a) A rough or chipped cutting edge, depending on the material
b) A bang is heard when cutting the bottom sheets of a pile
c) The cut material sticks together
d) The cut edge of the material is ridged or turned down
e) Inaccuracies in cutting (overcut, undercut, etc.)
Knife angle – Standard knife angles are between 23 and 25 degrees. Materials such as Foam Core should be cut with an 18 or 19-degree knife, while litho plate will require a double-bevel knife with a 30-degree primary edge and 24-degree secondary edge.
Clamp pressure – The basic rule of thumb is to use a higher clamping pressure for soft material and lighter pressure for hard material.
Have a question about paper cutter operation and maintenance – or to inquire about buying, selling, trading, moving, retrofitting or remanufacturing a paper cutter? Call Colter & Peterson at (973) 684-0901, or email us at cp@colterpeterson.com.
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