With this easy-to-make hot wire foam cutter, you can reuse leftover Styrofoam to create treasures from trash!
Thanks go to Bob Knetzger for the original article in Make: Volume 16.
To download The 5-Minute Foam Factory MP4 click here or subscribe in iTunes.
Check out the complete 5-Minute Foam Factory article in MAKE, Volume 16 "5-Minute Foam Factory"
and you can see that in our Digital Edition.





































One thing to keep in mind when building hot wire cutters is that the nichrome wire expands as it heats up. This can lead to a loose cutting wire, which can make cutting difficult.
In the past I've seen springs used to keep tension, but I think they solve the problem here by using the springyness in the aluminum.
Happy foam cutting!
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1. You might want to say something about good ventilation or figure out a fume hood for this thing because cutting foam is not very good for your health.
Also what over the long term will it do to your train transformer?
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