While there are all sorts of ways to build a hot wire foam cutter, this design from [jasonwinfieldnz] is both interesting and imitable. If you don’t already know it, nichrome wire is nifty stuff ...

If an outdoor hot tub is in your plans, here are some tips to ensure you wire it correctly. For those with an indoor hot tub, worry not. Here's how you can handle your hot tub's wiring.

Those stick-type hot wire cutters from the craft store that plug into the wall aren’t much better than a knife. The actual cleaving of foam is easier, but dragging a long, hot flexible wand ...