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Day 278 – Silver pentagonal hexacontahedron bracelet
Day 278 – Silver pentagonal hexacontahedron bracelet 150 150 mathgrrl

Back on Day 218 we printed a bracelet built by extracting the center rings of a Pentagonal Hexacontahedron in TopMod. This week we finally received the stainless steel version we ordered…

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Day 277 – Friday Fail: Diameter-is-not-radius edition, with Customizable Power Hair Clips!
Day 277 – Friday Fail: Diameter-is-not-radius edition, with Customizable Power Hair Clips! 150 150 mathgrrl

Say it with me now: If you measure across a cylinder with calipers, you get the diameter. The DI-AM-E-TER. Not the radius. Just saying, giant-model-on-the-right: As you can see, today…
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Day 276 – Petal conformation of 6_2
Day 276 – Petal conformation of 6_2 640 480 mathgrrl

Today is my favorite from the 3D-Printed Conformations of Knots through 7 Crossings series that my Math 297 students developed last semester in the JMU 3-SPACE classroom. It’s a petal knot…
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Day 275 – Mosaic conformation of 6_1
Day 275 – Mosaic conformation of 6_1 640 480 mathgrrl

Today’s knot print is a mosaic projection of 6_1: Thingiverse link: http://www.thingiverse.com/make:80243 Settings: Printed on a Replicator 2 with .3mm/low and normal support settings. Technical notes, math flavor: This knot was…

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Day 274 – Customizable Sock Bones
Day 274 – Customizable Sock Bones 150 150 mathgrrl

Sometimes I think I got into this 3D printing thing just so I would have the opportunity to say things like “customizable sock bones”. Here they are: These dogbone-like objects…
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Day 273 – Lissajous conformation of 5_2
Day 273 – Lissajous conformation of 5_2 640 480 mathgrrl

Today’s knot is 5_2, the three-twist knot, in a Lissajous conformation. The cool thing about this model is that from each side, the knot looks like a wavy cosine function: Thingiverse link: http://www.thingiverse.com/make:80103…
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Day 272 – Lattice conformation of 5_1
Day 272 – Lattice conformation of 5_1 640 480 mathgrrl

The cinquefoil knot 5_1 is one of two 5-crossing knots. The shape we chose for this knot is a  lattice conformation, which means that it follows only perpendicular directions in…

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Day 271 – Stretchy bracelets
Day 271 – Stretchy bracelets 150 150 mathgrrl

It’s Saturday and we are resting. Kids keep asking me for stretchy bracelets so today I made some from owens’ Smooth and ridged stretchlets model on Thingiverse. They came out…
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Day 270 – Friday Fail: Measure-twice-print-once edition, with Poker chip racks
Day 270 – Friday Fail: Measure-twice-print-once edition, with Poker chip racks 640 480 mathgrrl

Today I wanted to design and print a rack for poker chips, and I wanted it to hold three stacks of 20 poker chips. If you sew, or knit, or…
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Day 269 – Minimal stick conformation of 4_1
Day 269 – Minimal stick conformation of 4_1 640 480 mathgrrl

The figure-eight knot 4_1 is the only four-crossing knot, and it is usually drawn like the white knot on the left in the figure below. It is also the only…

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