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How'd They Do This?

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randyjaco

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#1
I went down to the Lone Star Rally this weekend. Saw some amazing bikes. I noticed several bikes with some interesting finish work on the cylinder fins. I think it was called "Diamond Bright". I took some pictures and I hope they show enough detail. I am just trying to figure out how they managed it. Best I can figure is some 4-5 axis cnc mill work, but it must be simpler than that.
 

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Ulma Doctor

Infinitely Curious
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#2
in my neck of the woods it's called "Diamond Cut"
the engine has to be disassembled, CNC machined and then reassembled.
i had a bike with the engine being diamond cut.
nice look, hard to clean
 
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