What is ball burnishing?

Apparently, it's having parts shaken in a tub with some bearing balls.

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Saw a pic in one of the GT catalogues.
They put a complete frame in a big washing machine with loads of ball bearings and then churn for a few hours.
 
MADJEZ":1osiqoii said:
From decals that looks more modern. I'd say that's brushed from the pick.
Ball-burnished is shiny polished or a dull oxidised look.

you might be right there , i looked back at the the ad/specs , and they list that finish as billet whatever that means.
 
Thanks for tall the replies. From what i've read, forget about retrospectively ball-burnishing a bike frame!
 
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