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Thread: Priming mdf before vinyl application.

  1. #1
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    Priming mdf before vinyl application.

    Hi all. Going to prime my mdf ready for the next build. This cab will mostly have vinyl art applied so was wondering if anyone had recommendations on what to use? Anything non vinyl will eventually be painted white.

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    Just use a white water based primer from bunnings.
    Sand it with 120 grit, Paint it, give it a very lite sand with 120 grit again, then give it a second coat.
    Make sure to give it a final very lite sand with 120 or higher wherever you intend on applying the artwork. This will ensure there is no little sharp lumps or droplets that may cause havoc under your artwork when you apply it.

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    Thanks. Brush or roller? I am not a great painter

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    Typically I would give the MDF a sand with some 600 grit to remove the shine only for the primer to bond too, and then etch prime then use a 1k primer. sanding it with rough paper will give it sand marks which you dont want. and use an etch and then a 1k primer, etch primer will allow the 1k primer to stick
    I would spray the primer as using a brush or a roller will give it a crap surface under the vinyl and it will print through the vinyl and you will see the brush marks

    each to their own but thats what i do

  5. #5
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    If you aren't confident or don't want to spray - you can apply an automotive primer with a smooth roller - AS LONG AS you sand smooth once it has cured. This is a good solution for 2 pack primers (if you don't want to be spraying that stuff).

    Topcoat - i'd be spraying the colour, and typically use an automotive acrylic. You can get colours mixed up into aerosol cans and you can spray it legally at home.

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    Well I am confident spraying. I have a 450lpm compressor I can use at home. My brush work is garbage that's all.
    I just want to paint all the pieces before fitting together. Its a wwf flat pack bar top that I've been staring at for months. And I just moved house so time to get to work

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    Lay your pieces flat and spray some acrylic primer. Let dry, sand and spray acrylic topcoat. Let dry, apply decals.

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    Sounds like a plan. Just need to wait for the wind to calm down. And buy a new spray gun lol

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    dont forget an etch primer,

  10. #10
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    Is that available from bunnings?

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