Ahmet Korkmaz
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· My model

Contra Heatmap Calendar

Printer
Creality Ender 3 S1
Filament
PLA, blue
Designer
Ahmet Korkmaz, with Contra

My GitHub and GitLab contributions for the last 53 weeks, printed as a desk object. Each bar is one day. A taller bar shows more contributions on that day.

How I made it

Contra merges the GitHub and GitLab contribution calendars into one calendar. Its “3D Print” button makes this model in the browser and gives a binary STL file. The text on the sloped front face is my username, raised by 1 mm.

The model is about 180 × 43 × 28 mm. It stands flat on the print bed and needs no supports. The gap between the bars is 0.6 mm, so a 0.4 mm nozzle prints each bar apart.

© 2026 Murat Ahmet Korkmaz. Built with Jekyll, hosted on GitHub Pages.