I have a turbomolecular pump from Osaka vacuum that is quite dirty, and I'd like to clean the blades off to improve balance.
I'm not quite sure how to approach this, I've tried carbon cleaner for turbochargers for cars to no success, and my next thought is to walnut blast the blades, but I'm worried about bending them.
What method should I use to clean these unknown deposits off the blades of this pump?

