Please watch with subtitles.
This is a Styrofoam cutter made using LEGO bricks.
This device cuts styrene foam with an electric heating wire cutter. The electric heating wire of the cutter is not a Lego element.
It is numerically controlled by Lego Mindstorms EV3. Software is still insufficient.
Three examples are explained in this video.

0:00 Making
2:18 Example 1: Cutting text
4:37 Example 2: 3D Cut
6:42 Example 3: Spiral cut

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#LEGO #mindstorms #レゴ