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mathgrrl

Day 178 – Borromean rings

Day 178 – Borromean rings 640 480 mathgrrl

When I give talks about 3D printing and knot theory, I often tell the story of my student Olivia who created and printed a 3D model of the Borromean rings…

Day 177 – Valentine tags

Day 177 – Valentine tags 640 480 mathgrrl

C’s classroom Valentine’s celebration was cancelled last week due to snow, and rescheduled for today. Stranded at home for a couple of days with no car and no Valentine’s candy…

Day 176 – Geologhedra samples

Day 176 – Geologhedra samples 640 480 mathgrrl

Today we printed a small handful of polyhedra that represent crystal mineral models for geologist Amy Thompson at Bridgewater College. We used nischi’s Crystal Structures Models on Thingiverse to start;…

Day 175 – Metro wallet

Day 175 – Metro wallet 640 480 mathgrrl

I don’t have a NYC Metro Card, but I hope to in the future. When I do, dadhoc’s Slim Wallet with Metro Card Sliding Compartment on Thingiverse is where I want…

Day 174 – MAA icosahedron

Day 174 – MAA icosahedron 640 480 mathgrrl

In a couple of days I’ll be speaking at the Carriage House, the headquarters of the Mathematical Association of America. Since the MAA’s logo is an icosahedron, I’ll be bringing…

Day 173 – LEGO ring

Day 173 – LEGO ring 640 480 mathgrrl

Thank you, tart2000, for making this lovely LEGO Ring on Thingiverse. My son had a great time adding the bling! Thingiverse link: http://www.thingiverse.com/make:65858 Settings: MakerWare .3mm/low on a Replicator 2, with…

Day 172 – Mobius Heart

Day 172 – Mobius Heart 640 480 mathgrrl

Happy Valentine’s Day!  In celebration, today we made a Möbius strip in the shape of a heart. The OpenSCAD code was kindly provided by kitwallace. From the side you can…

Day 171 – Sliced Menger 3: Triangles

Day 171 – Sliced Menger 3: Triangles 640 480 mathgrrl

The Menger slices from Day 169 and Day 170 each divided the cube into two identical pieces. Today we make a a slice parallel to the Starmaker from the first…

Day 170 – Sliced Menger 2: Rhomboidal

Day 170 – Sliced Menger 2: Rhomboidal 640 480 mathgrrl

Lots of people know what the inside of a sliced Menger cube looks like, at least the way we sliced it yesterday. But there are infinitely many ways to slice…

Day 169 – Sliced Menger 1: Starmaker

Day 169 – Sliced Menger 1: Starmaker 640 480 mathgrrl

Today we made a white stand and slice illustrator to accompany the diagonally sliced Level 2 Menger sponge we printed on Day 155.  Don’t look at the second picture until you…

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