3D Printing
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Day 224 – Rattlebacks
Day 224 – Rattlebacks 640 480 mathgrrl

Today we printed VeryWetPaint’s Rattleback Twins model from Thingiverse. If you spin one of these “rattleback tops” in the proper direction, it will actually shake and reverse itself, ultimately spinning in…
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Day 223 – CGR 3-Doodler squiggle tower
Day 223 – CGR 3-Doodler squiggle tower 480 640 mathgrrl

Today we finally broke out the 3-Doodler 3D-printing “pen”. Calvin loves making tall towers of squiggles. This one broke the record! Technical notes, Yaya-comparison flavor: We also have the Yaya 3D…
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Day 222 – Cube screw-puzzle
Day 222 – Cube screw-puzzle 640 480 mathgrrl

Today we printed the four-piece cube puzzle from GeorgeHart’s Five Screw-Puzzles model on Thingiverse. This one is very easy in comparison to the tricky tetrahedron puzzle from that set of models,…
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Day 221 – Friday Fail: CubeX Trio edition
Day 221 – Friday Fail: CubeX Trio edition 640 480 mathgrrl

Let’s start on a positive note. This week the CubeX Trio in the JMU 3-SPACE classroom printed something! Specifically, the giant hand model that comes as a demo with the…
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Day 220 – Dragon Curve
Day 220 – Dragon Curve 640 480 mathgrrl

Today we were very excited to print Henry Segerman‘s stunning Developing Dragon Curve model. Henry sent us the file for the model so we could print a small test run of it before…
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Day 219 – Chmutov-Schwartz minimal surface
Day 219 – Chmutov-Schwartz minimal surface 640 480 mathgrrl

Today we printed elgolem’s Chmutov-Schwarz minimal surface model on Thingiverse, in honor of George Hart‘s wonderful bouncy circle sculpture from G4G11. Thingiverse link: http://www.thingiverse.com/make:72978 Settings: To print this object we had to convert…
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Day 218 – Poly/giraffe bracelet
Day 218 – Poly/giraffe bracelet 640 480 mathgrrl

Today we designed a bracelet by using TopMod to extract a ring of irregular pentagons from the center of a Pentagonal Hexacontahedron wireframe (our “giraffe polyhedron” from Day 194). We made small…
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Day 217 – Customizable Tree
Day 217 – Customizable Tree 640 480 mathgrrl

Today we printed the Customizable Tree from Thingiverse. A lot of my students at JMU 3-SPACE try to print trees from Marissa’s Tinkercad community shape script or other sources, but those…
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Day 216 – Tiling space with a weird squiggle
Day 216 – Tiling space with a weird squiggle 640 480 mathgrrl

I’ve been having fun watching the math that Mike Lawler (@mikeandallie on Twitter) and his kids discuss on video at their blog mikesmathpage, and thinking about how to get my…
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Day 215 – Great Dodecahedron from Generated Polyhedra Code
Day 215 – Great Dodecahedron from Generated Polyhedra Code 640 480 mathgrrl

Today’s print is a Great Dodecahedron designed by kitwallace, author of The Wallace Line blog and master constructor and compiler of polyhedra. He’ll be guest-posting later to talk about his OpenSCAD polyhedron…

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