Hot wire cutting foam packaging.
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Previously:
https://www.homemadetools.net/forum/...193#post184679
https://www.homemadetools.net/forum/...090#post149542
https://www.homemadetools.net/forum/...162#post141533
https://www.homemadetools.net/forum/...277#post138673
https://www.homemadetools.net/forum/...554#post132386