9v battery made into a hot wire foam cutting tool - video

This looks like a cool little thing to make if you ever need to cut up some foam. As is so often the case, I saw this video on some POS freebooting Facebook page first, but this appears to be the original. “Do all appropriate safety things” (how’s that for a disclaimer?)

【Any Angle Hot Wire Cutter】The hot wire foam cutter can heat quickly, you can cut the template or foam block from any angle and make it into the shape

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