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Gesso Board

Discussion in 'Substrates' started by Rick Martin, Aug 16, 2017.


  1. Rick Martin

    Rick Martin Detail Decepticon!

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    Ok i got some gesso board sanded it with 800. My question. Is there something im not doing right to get the first layer on. I start with my base reduction 6:1 but first layer shoots out like its water with no paint added.
  2. AndreZA

    AndreZA Love this place! Forum Supporter Very Likeable!

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    It sounds like it is too thin. It definitely is not anything to do with the gesso board.
  3. Airbrush Dreams

    Airbrush Dreams Air-Valve Autobot! Very Likeable!

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    I usually start at 1:3 reduction. Just remember that once reducer is added to paint it reduces the ability to work it with erasing. Because of the Addison solvents.


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  4. Rick Martin

    Rick Martin Detail Decepticon!

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    Ok maybe i will tey no reduction tonight after work
  5. AndreZA

    AndreZA Love this place! Forum Supporter Very Likeable!

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    That is correct. Thin paint gets absorbed into the the porous surface and you can't get it out with erasing. Thick paint sits on top of the surface. If you need it to be transparent, use transparent base.
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  6. MarcosD

    MarcosD Detail Decepticon! Very Likeable!

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    6:1 for Com-Art paint is way too much, try to use some medium to make it more translucent and no so much water.
  7. Lt4-396

    Lt4-396 Guest

    Make sure you wipe the board down with iso, wax and grease remover or something similar.
    I had a problem just like this on my homemade clay boards and once I cleaned them the problem went away.

    6:1 for comart is definitely to thin. I was able to shoot it straight from the bottle threw my .18 micron at 15-18psi.
    If your trying to dilute the color then use a trans base, CI trans works fine with comart.
  8. Rick Martin

    Rick Martin Detail Decepticon!

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    Ahhhh i see thats exactly what i was trying to do. Thanks for all the help
  9. Rick Martin

    Rick Martin Detail Decepticon!

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    By iso you mean alcohol. I have 99% at the house. I will stop by the parts house on the way home and see if they have water based degreaser
  10. Lt4-396

    Lt4-396 Guest

    The iso alcohol will be fine to degrease the gesso board, you don't need to buy a dedicated w&g remover.
  11. Rick Martin

    Rick Martin Detail Decepticon!

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    Ok sounds good.going home later and sanding the one i started down and gessoing it again. The others i will wipe sown.
  12. Lt4-396

    Lt4-396 Guest

    Depending how many coats you put on you might be able to just sand it with 600 and start painting again without reapplying gesso.
    The clayboard I sand until perfectly smooth and finish with 1200 but I use a machine so the sanding only takes a few seconds.
  13. Rick Martin

    Rick Martin Detail Decepticon!

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    I spray it out of a gun so i mix 50/50 gesso and water.
  14. Airbrush Dreams

    Airbrush Dreams Air-Valve Autobot! Very Likeable!

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    I tried Comart on Gessoed board as a test before I ordered paint the last big order and I had a hard time erasing and scratching it off and even a harder time with CI that why I ordered E'Tac EFX for painting on Gessoed Board.


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  15. Lt4-396

    Lt4-396 Guest

    I had the same problems as airbrushdreams and that's now way I use diy clayboard or add a small amount of rabbit skin glue to my store bought gesso to make it less absorbable.
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  16. Rick Martin

    Rick Martin Detail Decepticon!

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    I have the same issue with it if i dont erase before the first 30 minutes. I cant find Etac.
  17. Airbrush Dreams

    Airbrush Dreams Air-Valve Autobot! Very Likeable!

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  18. Lt4-396

    Lt4-396 Guest

    I would get the etac EFX from usa airbrush if that's the paint you want to use.

    If you want a less absorbable substrate than look into the RSG.
  19. Rick Martin

    Rick Martin Detail Decepticon!

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    Ok what is RSG.
  20. JackEb

    JackEb The Dragon Hunter Staff Member Admin

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    Rabbit Skin Glue. from memory you can buy granules and melt it.... not 100% sure, never had the need to go that far lol

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