Your best bet would be to incoorperate something likely to cause the disc to shatter into the padding.
This is an awesome idea! Not that I know about shattering cutting discs. What does that? Diamonds? Might up the price of the lock ...
@Skülly started
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This is an awesome idea! Not that I know about shattering cutting discs. What does that? Diamonds? Might up the price of the lock ...