The idea was to 3D print the outer casing of the lathe in two parts, adding structural parts where needed to bolt on motors and tool holders, and then fill the whole thing with concrete for ...

While the outer casing is plastic, the cutout is lined with a metallic ring on the inside, increasing its structural strength. The device weighs 13.75 grams and measures 28.8 x 52.44 x 8.0 ...