3D Printing
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Day 182 – Voronoi die
Day 182 – Voronoi die 640 480 mathgrrl

Today we printed a copy of sirmakesalot’s clever Bone Die on Thingiverse using our loaner Afinia H-Series: Thingiverse link: http://www.thingiverse.com/make:67307 Settings: Afinia .3mm/low on “fast” with “only base” supports.
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Day 181 – Hexagonal Borromean rings that print without support
Day 181 – Hexagonal Borromean rings that print without support 640 480 mathgrrl

Printing Borromean rings in three pieces minimizes support because the first two pieces need no support at all. In this model we’ve used a hexagonal ring shape with sides beveled…
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Day 180 – Diamond Borromean
Day 180 – Diamond Borromean 640 480 mathgrrl

Same as Day 179 but with diamonds instead of ellipses! This version of the Borromean rings has more limited mobility but that restricted movement makes it naturally sit on your…
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Day 179 – Tricolor Borromean rings
Day 179 – Tricolor Borromean rings 640 480 mathgrrl

Yesterday we mentioned that you could print a three-color model of the Borromean rings by printing the rings separately and placing the first and second in and around the third right…
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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…
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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…
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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;…
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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…
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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…
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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…

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