This was my first (extremely simple) Maker Pipe project. 8 players have to switch from trombone to baritone in the marching show.

I used flange connectors, shrink wrap, and conduit caps. The middle part that the bells rest on I had 3D printed here at school.

Not a big deal, but it worked great. I used lag screws to anchor them to the cart and they have held up perfectly all season.