The Backing Boards are the two sheets of matboard that are placed on the CMC behind the sheet of matboard being cut.
Info
The Backing Boards will need to be replaced if you see a lot of blade scoring into it to prevent the cutting blade from following previous cuts in the Backing Board.
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Backing Board Definition
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Warning
Troubleshooting:
I keep getting random bad cuts.
The Backing Boards should be replaced if there is significant blade scoring to prevent the cutting blade from following previous cuts.