Etch priming over part chrome

  1. Bluemotion

    Bluemotion Member

    Messages:
    34
    Location:
    Holmfirth
    Anyone have experience of etching over chrome? I’m just on with an old bsa tank that’s red and chrome sides. The chrome itself runs throughout the tank including its underside too. I’ve the job of repainting it to how it should be but I’ve only one chance of getting the colour edge to chrome right and generally I would use any make of etch because it’s usually either clean steel of ally but in this case I need to choose carefully to which will key strongest. Any proven etches out there that worked?
     
  2. Dcal Member

    Messages:
    808
    Location:
    Antrim Northern Ireland
    Can you roughen it up a bit?
    Grit blasting would be ideal but anything would help.
    I would think an epoxy primer would be your best option but I have no experience of painting chrome.
     
    brightspark likes this.
  3. brightspark

    brightspark Member

    Messages:
    25,463
    Location:
    yarm
    it will help to scuff the chrome before etch applied to get a good key . run over it with a da and a course sanding disk
     
    Dcal likes this.
  4. norsa

    norsa old school painter

    Messages:
    1,571
    Location:
    Newbury UK
    I would be tempted to seek advice from a chrome plater mate. It's not going to work with regular primers. I've tried. It's too hard.
     
    Bluemotion likes this.
  5. Bluemotion

    Bluemotion Member

    Messages:
    34
    Location:
    Holmfirth
    The thing has been been painted from new from the factory but as the colour (traditional cellulose) stops and meets the chrome the original method is just done by chance without keying the last few millimetres from how it looks.
     
  6. norsa

    norsa old school painter

    Messages:
    1,571
    Location:
    Newbury UK
    I have a vague memory of masking off and using an acid but as I say, chromers advice is going to be your best chance here
     
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