Print:

4x curves;

3x tubes;

1x bell;

1x tudel. 

Joints are optional, but these are the quantities:

2x joint2;

1x joint1, joint 3.

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This is just an experiment to hear how good (or bad) a plastic brass instrument sounds. 

It should be tuned to Bb3 (~233Hz) at 20°C, since its full length is ~148mm. Works with standard trumpet mouthpieces. Sounds pretty alright.

I recommend using CA glue to join the parts. I uploaded the tube joint models, but I ended up just gluing them all together.

I found that this model is pretty fragile and not that airtight, probably because it only has two walls on most of the print. Also, it requires a pretty big printer to make.

I will publish an updated model in the future.