Why not? Source: https://unnamed.website/posts/3d-printing-trombone/ From the post: It’s that time of the year again: April Cools! My friend Ersei wrote a fun April Cools post two years ago, so I guess I’m joining that cult trend too. Anyways, instead of the usual Lean propaganda, today’s post will be about brass instrument physics and 3D-printing a playable trombone!