TubeNet

This Discovery Channel article shows brassworking tradecraft and knowhow demonstrated on a trombone. The same principles work on tubas also, but with larger tooling, more patience, and more time needed.
http://www.youtube.com/watch?v=G5LqrMcq1QE" target="_blank" target="_blank" target="_blank" target="_blank

Thanks to Woodwind Brasswind for posting this to Facebook.
http://www.facebook.com/#!/woodwindbrasswind" target="_blank" target="_blank" target="_blank" target="_blank

Here is the tuba episode:
http://www.youtube.com/watch?v=NQIP53NEBIY