+1,
The primary issue when painting chrome is adhesion. This will be especially important down near the ends of the blades where there's quite a bit of flex.
A decent painter will grit blast the frame, not to fully remove the chrome, but to produce a texture that the paint can latch on to.
Some painters chemically etch the chrome, but I don't suggest that because the acid gets into the tubes, and often isn't rinsed or neutralized effectively.
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