3D Printing

Perko Knot Reprint: Dissolvable vs. Breakaway Supports

Perko Knot Reprint: Dissolvable vs. Breakaway Supports 2016 1512 mathgrrl

Our Giant Spiky Perko Knot takes six days to print… In this post we’ll walk through a reprint of this giant 3D model, and compare dissolvable and breakaway supports…

Just in Time: Clocks!

Just in Time: Clocks! 640 480 mathgrrl

You can create a unique, custom generated 3D-printed clock face with just a little bit of design knowledge and an inexpensive battery-powered clock kit…

The Snowflake Machine

The Snowflake Machine 628 472 mathgrrl

The Snowflake Machine uses random numbers, mathematical algorithms, computer code, and SCIENCE to create over a billion unique, beautiful snowflakes…

Knots in OpenSCAD with Sweeper

Knots in OpenSCAD with Sweeper 710 528 mathgrrl

This week we recreated a special collection of 3D knot models based on projects we did with students a few years ago, suitable for printing on SLS printers…

Hinged Triangle-Square

Hinged Triangle-Square 710 528 mathgrrl

One of our favorite 3D designs is a model of Dudeney’s famous hinged dissection of a triangle to a square, also known as the Haberdasher’s Puzzle…

Generating Random Constructivist Art

Generating Random Constructivist Art 628 472 mathgrrl

This is a joint work by Edmund Harriss (gelada) and Laura Taalman (mathgrrl), inspired by British constructivist artist Mary Martin’s artwork “Inversions”…

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…

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…

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…

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?…