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  1. #1
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    Feb 2020
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    Default Painting MDF Trouble

    Hi Everyone,

    Having a small issue in “our creative zone”
    I’m trying to spray paint some MDF letters that I brought from the big green shed.

    I used some primer first , then hit it with some top coat (pink) Acrylic spray paint ( White Night )
    As you see by the pic, the pink paint has taken to the top face of the pink letters , but not actually taken on the side of the letters.

    It looks like the paint has just been sucked into the MDF when I was spraying them .

    Cheers Sally

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  3. #2
    Join Date
    Feb 2016
    Location
    Canberra
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    5,124

    Default

    Correct. One needs to seal the sides of MDF before painting.

    Panic not, all can be solved.

    Let me find a thread where I discussed exactly this.


    Edit--->
    Here: Help wanted High Gloss finish on MDF?
    Here: Sealing MDF board
    A video: YouTube


    In the second link, I talk of "car bog". This is a filler used by panel repair guys and works the absolute best. Next best is Gyprock (dry wall) filling plaster. The extra smooth finishing one in the red tin is the best. Does a great job.

    Ask any more quesitons. Many here can help

  4. #3
    Join Date
    May 2012
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    Woodstock (Cowra)
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    3,372

    Default

    Paint the edges with PVA glue, let dry, spray away
    The person who never made a mistake never made anything

    Cheers
    Ray

  5. #4
    Join Date
    Feb 2020
    Location
    Melbourne
    Age
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    Default

    Quote Originally Posted by woodPixel View Post
    Correct. One needs to seal the sides of MDF before painting.

    Panic not, all can be solved.

    Let me find a thread where I discussed exactly this.


    Edit--->
    Here: Help wanted High Gloss finish on MDF?
    Here: Sealing MDF board
    A video: YouTube


    In the second link, I talk of "car bog". This is a filler used by panel repair guys and works the absolute best. Next best is Gyprock (dry wall) filling plaster. The extra smooth finishing one in the red tin is the best. Does a great job.

    Ask any more quesitons. Many here can help




    Sent from my iPhone using Tapatalk

  6. #5
    Join Date
    Feb 2020
    Location
    Melbourne
    Age
    53
    Posts
    73

    Default Painting MDF Trouble

    Thank you so much for your help woodpixel , much appreciated


    Sent from my iPhone using Tapatalk

  7. #6
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    Feb 2020
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    Melbourne
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    Default

    Thank you nwbuild for letting me know. Much appreciated


    Sent from my iPhone using Tapatalk

  8. #7
    Join Date
    Feb 2016
    Location
    Canberra
    Posts
    5,124

    Default

    Ah! Sally, simplicities controller!

    Didnt even look at the name. On the MDF, for scrolling, many use Mod Podge (I havent, though Ive a pot), a mix of woodglue and water (sizing), or simply a few coats of undercoat with a brush first.

    They use nail files to sand edges, or make their own by sticking sandpaper strips to paddle pop sticks, a dremel with a fine drum attachment, or buy these "sandpaper files"....

    https://www.aliexpress.com/wholesale...sandpaper+file
    To hold dremels better for this kind of work: Buy Products Online from China Wholesalers at Aliexpress.com

    Detail Sanders: Rockler: Detail Sander - Belt Holders
    Other: Belt Sticks, Sets | Gesswein

    These are easy to make yourself.

    external-content.duckduckgo.com.jpg

  9. #8
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    Aug 2008
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    34
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    Default

    MDF edges will act like a sponge, you might want to try a double layer of primer just to be sure

  10. #9
    Join Date
    Feb 2020
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    Melbourne
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    Default

    Quote Originally Posted by elanjacobs View Post
    MDF edges will act like a sponge, you might want to try a double layer of primer just to be sure
    Ok thanks for letting me know that


    Sent from my iPhone using Tapatalk

  11. #10
    Join Date
    Nov 2011
    Location
    Melbourne
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    6,973

    Default

    [QUOTE=woodPixel;2176838]Ah! Sally, simplicities controller!

    Our relationship, i will have you know is an equal .49/50 percent split.
    [emoji6][emoji6]

    Cheers Matt.

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