I've lost interest in watching his videos due to the new direction of the marble machine. I enjoyed the previous one as an art piece but then Martin got obsessed with perfection and turned it into a soulless bland engineering project with a frustratingly poor understanding of engineering.
I also miss the old version. that marble lift was so cool. seems a shame to have scrapped it instead of making some music, whatever it wound up being.
on the other hand, I assume when this version gets further along it'll start coming to together like the last.
I still watch his videos and in my opinion he has seem to improved a bit when it comes to understanding engineering. He still has some obsession with perfection but not as much back in the MMX era (the current machine is actually called MM3)
I just couldn't forgive him after he tried to design his own crappy version of pillow blocks. It was at that point that I knew the machine wasn't going to be either an amazing art piece or an amazing piece of engineering.
At least he's starting to take feedback better https://m.youtube.com/watch?v=Mzhaz7WsJ-A
he decided on more traditional pillow blocks and the flywheel mounted to the shaft via a shaft clamp