Sounds cool and is fun working on big motors sifting though loads of drawings sorting and ordering flanges parts and bits. till you realise your a old man that also has to build it all. Cummins qsk95. Kta50's etc. Lithium and associated mining for batteries taking off. All jobs are for contract power management. Turning massive alternators for power generation. My Brother in law works for C.P.M. So always interesting mining and engine conversations. All the exhaust systems are like big meccano kits with slip joints on flanged bellows and lobsterbacks so they can be adjusted and welded on site out to the mufflers with stacks etc. I love the solid geometry and mathematics involved, parallel line, radial line and triangulation. but am getting too old to continuously pump out the big welding jobs. [emoji70]