The Trombone Champ Controller may be assembled with 3D printed parts, described below. The parts print with no supports, however you may want to use a brim since most of the parts have thin walls.

The STL files can be downloaded directly here.

Since a trombone has an intricate looped shape, the model is comprised of seven .STL files. Each part has tabs that connect with M2.5 screws. It can be helpful to think of the trombone in two parts: the main horn loop and the slide loop.

Main Horn Loop Parts

  • mainHorn_v0
  • hornBend_v1
  • arcadeMount_v1
  • hornElectronics_v1

Slide Loop Parts

  • potSlide_v0
  • slideBend_v0
  • innerSlide_v1

The main horn loop has a mounting hole for the arcade button, cutouts for the QT Py's STEMMA QT and USB ports and mounts for the NeoSlider.

The slide loop attaches to the NeoSlider's slide pot and inserts into the main horn loop to mimic a trombone's slide.

Other Materials

If you don't want to 3D print the trombone, you could use cardboard tubes or PVC pipe to construct a similar shape.

This guide was first published on Sep 30, 2022. It was last updated on Mar 28, 2024.

This page (3D Printing) was last updated on Mar 08, 2024.

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