Tesla Turbine Build

I’ve been set the challenge of building an arrangement that can spin a shaft at 30,000 RPM and can do it pneumatically. A Tesla Turbine seemed like the most interesting option, and this is the build. I've been inspired by JohnnyQ90, so a massive thanks to him for publishing his videos and answering my questions. If you haven’t seen his work, then take a look here: https://www.youtube.com/user/johnnyq90