Lò xo sóng chữ nhật lơ lửng (g-code hack) – Midair Rectangular Wave Spring

We made a custom g-code generator for printing rectangular wave springs in midair because you can't really buy them anywhere. You can adjust the width/length, corner radius, number of waves, and many more parameters to suit your needs.

https://makefastworkshop.com/hacks/?p=20241107

It was designed to support an automated wildlife monitoring system as part of a nature conservation effort. The scientists reached out and asked if there was a way to print a rectangular wave spring using a similar method to something I shared years ago (midair coil springs).

G-code should work on both Mk3 and Mk3S printers with PETg filament. I found that the fan cooling was slightly uneven with the original shrouds (Mk3/Mk3S), so I printed an updated version (specifically, this one), and it became much more reliable to print.

It takes about 28 min total because the midair sections work by moving very slowly so that the plastic cools as the hot end moves above the part. All code is open source -- have at it!