This week we examine carving styrofoam or at least how I do it. I create outlines in cardboard and then mount them onto the block of foam. The cardboard acts as a guide for my homemade hotwire (years ago I made one using a Lionel Train transformer, an extension cord, PVC pipes, and guitar string). If you take a look at the video on the bottom you can see me knock it apart after carving the front and side profiles.
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Below I used a large, smooth cake knife to cut off a lot of the excess
Below that you can see a small video of me knocking off pieces after hotwiring.