Dry ice blasting? That would do it wouldn’t it?
Edit: I mean as far as cleaning off said part dry ice blasting should work.
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Never heard if it before but after looking into im pretty excited. Will probably take some trial and error to make the dry ice powder feed into my air stream correctly but I’m gonna try this out. Thanks @Curious_Roberto
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It looks pretty cool, you get sand blasting with no damage and nothing to clean up
They’re actually rent machines too specifically for it.
Jet wash is usually a shitload hotter and uses caustic detergent to remove scale. Not saying that can’t be done with a pressure washer though.
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I was quoted $400 to rent a machine for the day so thats a no go. I’m pretty sure I can figure out how to launch some dry ice out of a tube 
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Holy shit, yeah, that’s a lotta cash for that.
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