Prep For Painting Over Chrome?

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PostPosted: Mon Jan 11, 2021 12:42 pm
Hi Guys,

I may have some bike parts to paint, (battery cover, chain guard, etc.) that are currently chrome but the owner wants them gloss black. I am concerned about primer adhesion. After sanding to say 120 grit, what would be my next stage for primer?

Thanks!!



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PostPosted: Mon Jan 11, 2021 2:51 pm
I’d say scuff it like you say and give it a coat of your favorite epoxy primer. I would do a test piece to see the results first.

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PostPosted: Mon Jan 11, 2021 7:54 pm
Getting paint to adhere to chrome can be notoriously difficult.

To do it properly you need wash primers, etch primer and a high build. However, I've had reasonable success with just epoxy. Substrate must be thoroughly sanded to P150-P180, leaving no spots still shiny chrome and must be surgically clean.
Chris



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PostPosted: Mon Jan 11, 2021 10:05 pm
He seems to speak with a bit more authority, and by his response, more experience than I.

Just sayin



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PostPosted: Mon Jan 11, 2021 11:36 pm
RamblerRacer wrote:I’d say scuff it like you say and give it a coat of your favorite epoxy primer. I would do a test piece to see the results first.
O.K. sounds good, I'll se what my local supplier can suggest for an epoxy primer.



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PostPosted: Mon Jan 11, 2021 11:40 pm
NFT5 wrote:Getting paint to adhere to chrome can be notoriously difficult.

To do it properly you need wash primers, etch primer and a high build. However, I've had reasonable success with just epoxy. Substrate must be thoroughly sanded to P150-P180, leaving no spots still shiny chrome and must be surgically clean.
All good stuff. I don't think I have heard of a wash primer--I'll look it up. Thanks!!

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