HMMM
The nirtogen flow may work, but it will have to be a constant flow to keep the Oxygen level low enough to not support combustion, BUT even so, it will smolder at a very low oxygen level without actually "burning"
If you try the sawsall, use a soap and water mixture to help lube the blade. Spray it lightly and continuously and you should not have to worry aobut harming the paper. Be careful with the amount you use.
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