Craft & Design

This week’s Math Monday on Make: Online is all about Bob Rollings‘ mathematical lathe work. George Hart writes:

Another example of Rolling’s lathe work has a spindle icosahedron assembled around a solid great stellated dodecahedron. Although the great stellated dodecahedron has flat faces and is nothing like a baseball bat, it was completely fabricated by turning on a lathe. Sets of five triangular faces are coplanar and so are turned in one operation. (A plane, though flat, has rotational symmetry, so can be cut on a lathe.) Twelve such planes are turned, on twelve different centers, with the piece held in a spherical chuck.

Becky Stern is a Content Creator at Autodesk/Instructables, and part time faculty at New York’s School of Visual Arts Products of Design grad program. Making and sharing are her two biggest passions, and she's created hundreds of free online DIY tutorials and videos, mostly about technology and its intersection with crafts. Find her @bekathwia on YouTube/Twitter/Instagram.

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