With the delivery of the Styrofoam sheets for the payload container I decided to make a hot wire cutter. Utilising an old DC PSU from some thing and after getting some proper Nichrome wire (note fuse wire doesn’t work!) I constructed the following hot wire cutter out of some old wood and a workmate. Using some work working techniques I decided to make a guide for the Styrofoam rather than marking a line and cutting down the line. By placing a block of wood marking the exact distance between the wire and the edge of the Styrofoam I was able to get some near perfect cuts. I would strongly recommend a set square to check the edges are 90′ but for my first attempt I was really chuffed.
The on/off switch was a paper clip 🙂
I’m going to construct a second rig to make notches in the pieces so they all fit snugly together but for the mean time here it is :
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