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mathgrrl
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3D Printing Strong and Sturdy Models
3D Printing Strong and Sturdy Models 1140 680 mathgrrl
Sometimes a digital 3D design looks great in software, but just can’t make it in reality. We’ll examine how auto-checks, human checks, and prototyping can help…
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Filament Samples and Customizability
Filament Samples and Customizability 640 480 mathgrrl
Do we need another filament sampler model? Probably not, but we made one anyway, using Tinkercad, Fusion, Blender, and OpenSCAD to make it customizable…
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Schönhardt Polyhedron
Schönhardt Polyhedron 628 472 mathgrrl
The simplest non-tetrahedralizable polyhedron is the Schönhardt polyhedron, which is a twisted triangular prism constructed in such a way that…
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Is your 3D model a mess? Make it printable!
Is your 3D model a mess? Make it printable! 840 517 mathgrrl
What do you do when your 3D model is broken? I mean really broken, like “can’t even upload it” broken, or “half of my triangles are disappearing” broken?…
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3D Printed Spacer for Using Sharpies in the Silhouette
3D Printed Spacer for Using Sharpies in the Silhouette 964 640 mathgrrl
In this post we’ll use 3D printing to solve the micro-problem of keeping an ultra-fine point Sharpie marker aligned in a Silhouette craft cutter…
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Pairs of Packable Scutoids
Pairs of Packable Scutoids 628 472 mathgrrl
There’s a new shape in town! In a new article “Scutoids are a geometrical solution to three-dimensional packing of epithelia” in the journal Nature, a group of scientists just introduced a new shape that they have dubbed a “Scutoid”. To make a 3D model of this new shape, we created a simple polyloft module in OpenSCAD that lofts from one polygon to another… // Hacktastic
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SONY Paper for Reading Technical Mathematics
SONY Paper for Reading Technical Mathematics 640 480 mathgrrl
I brought nearly 1000 research papers and over 200 books with me to Peru this spring. Not in heavy stacks and stapled packets, but on a SONY Digital Paper, a large-format e-reader that is basically the size of a thick piece of standard 8.5 x 11 paper. The Paper is the first electronic device I’ve used that is suitable for reading technical mathematics research papers… // Hacktastic
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Saddle Surface with Mathematica and Tinkercad
Saddle Surface with Mathematica and Tinkercad 540 406 mathgrrl
A saddle surface is one of the few things I think is really worth 3D printing for Calculus students. There’s something important able to feel the two competing curvatures with your actual hands, instead of just looking at a picture. Since I always like to use the simplest design tools possible, this is a model that I export from Mathematica and then process in the much easier to use design software Tinkercad… // Hacktastic
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3D Printing in South Africa
3D Printing in South Africa 628 472 mathgrrl
This month I had the opportunity to speak about mathematics and 3D printing in Johannesburg, Pretoria, Cape Town, and Kimberley as part of the U.S. Embassy Speaker’s Program. For this visit I made a special 3D-printed keychain to give away at events, which highlights the nine provinces of South Africa. By running a loop through the landlocked country of Lesotho, you can make a keychain… // Hacktastic 
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Knitting Machine Punch Card Trials
Knitting Machine Punch Card Trials 398 302 mathgrrl
We’re finally getting back to our Brother KH-881 punch card knitting machine project… and it’s time to make some punch cards! The KH-881 reads 24-stitch repeat punch cards, and uses the punched holes to determine where stitches are slipped, tucked, or knit in a differerent color, depending on the settings on the machine. Some punch cards come standard with the machine, but you can also hand-punch custom cards… // Hacktastic
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