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what is the best way to make your own hot knive for cutting 2" pinkfoam board?


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Dr.Bill7 years ago
Take a resistor wire from an old electric heater. cut a 6" length. attach it to an old train transformer and turn up the power until it cuts smoothly without burning.
SdaMaster7 years ago
I use an old wood burner with a modified tip it works great
Sandisk1duo8 years ago
get some high guage wire, and short a battery with it
mousebengal (author)  Sandisk1duo7 years ago
too unpredictable for scroll work,good try though
you could just take a hacksaw blade, and attach that to a 40W soldering iron
Yeah, hobby stores (such as model railroads) usually have foam cutters that have a handle and a wire stretched taunt which is then heated to cut the foam. My dad has one and it works great.