A Tiny Temperature Tower

A small temperature tower you can tune to your liking, using OpenSCAD's customizer. I've included gcode for the Mk4 with input shaping.

If you'd like me to provide a specific configuration of temperature range and filament type, just ask!

Adding Temperature Changes

PrusaSlicer users don't need to do anything: the slicer will automatically pick up temperature changes from the 3mf files.

Other slicers (probably) need you to manually insert M104 GCode at the appropriate height.

For instance, the GCode to set the temperature to 210° is M104 S210.

I recommend changing temperature on the topmost layer of each tier. This should allow the print head time to cool down to the desired target temperature. You can add a pause if you want, but be prepared for filament to leak out of the nozzle when this happens, resulting in a blob at the start of each tier.

Mk4 Thermistor Debugging

Some Mk4 owners--including me--are experiencing a lot of stringing with prints. The thermistor model allows you to check whether your hotend is extruding at temperatures where it shouldn't be. If you're able to print PLA at, for instance, 170°, it may indicate that your hotend thermistor is reporting colder than the actual temperature.

You can use the provided GCode file to test your Mk4.

Forum thread about this issue: [https://forum.prusa3d.com/forum/english-forum-original-prusa-i3-mk4-assembly-and-first-prints-troubleshooting/mk4-pla-stringing/](https://forum.prusa3d.com/forum/english-forum-original-prusa-i3-mk4-assembly-and-first-prints-troubleshooting/mk4-pla-stringing/)

Thanks

This is entirely original work, but was inspired by [https://www.printables.com/model/269942-worlds-smallest-temperature-calibration-tower-test](https://www.printables.com/model/269942-worlds-smallest-temperature-calibration-tower-test). Thanks for the cool idea!

Source Code

OpenSCAD source is on this page. The full source repository also includes a build script to create temperature-tagged 3mf files: [https://git.woozle.org/neale/temperature-tower](https://git.woozle.org/neale/temperature-tower)

License

Released under an MIT license, despite what printables.com claims :)