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Thread: thickening ink

  1. #1
    Frank Sparrow's Avatar

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    Default thickening ink

    so i bought some ink from an art store that was going out of business and some of it is a bit watery. i know that i can thicken it up by adding white or by leaving them open and letting some of the water evaporate out. is it possible to add corn starch to thicken it? are there any other possible things to add to thicken it a bit?

  2. #2
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    caribou's Avatar


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    you could try thickening it a bit by putting in some of the really thick extender base that speedball sells. it'll make the color a little more transparent, though. i'd say if you don't need it right away, i'd just leave the top off and let it evaporate a bit.

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  4. #4
    phunka's Avatar

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    white will affect the color

  5. #5
    maynard's Avatar

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    I've thickened by opening the container and slowly stirring it so that the evaporation is more even. If you leave the can/jar open, the top of the ink will thicken more and could dry out which is a pain.

  6. #6
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    thicken it? man, I can't imagine thickening ink - the wb we use is usually like pudding already. if we thickened it, I think it'd be like a cold stick of butter.

    but I'm prob. doing it wrong...
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  7. #7
    weathermaker's Avatar

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    hheya...i have really thin tw inks and thicken them all the time...from tw you can order a thickener for 12 bucks or something, but the chemist says it's main ingredient is found in a kitchen...that leads me to believe it's cornstarch. i say try it! what do you have to loose? if it doesn't work, the tw graphics product works really well and lasts a long time...

  8. #8
    micro's Avatar

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    yep, cornstarch. thickens all my sauces.

  9. #9
    micro's Avatar

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    just found this too.



    MAKING SILK SCREEN PAINT

    The paints described here for silk screen printing should have a shelf life of
    several months when they are stored in jars with tight-fitting lids. The recipes
    have been tried successfully in a temperate climate. Paints colored with powdered
    tempera are more brilliant than those colored with food colors or ink. Other
    water-soluble dyes can probably be used also.

    Materials

    Starch or cornstarch
    Soap Flakes
    Gelatin (optional)
    Coloring matter (food color, tempera powder, ink, or a dye of some sort that is
    water soluble)

    Recipe #1

    Linit starch (not instant) 115 ml (1/2 cup)
    Boiling water 345ml (1 1/2 cup)
    Soap flakes 115ml (1/2 cup)

    Mix starch with enough cold water to make a smooth paste. Add boiling water
    and cool until glossy. Stir in soap flakes while mixture is warm. When cool, add
    coloring.

    Recipe #2

    Cornstarch 57.5ml (1/4 cup)
    Water 460ml (2 cups)
    Soap flakes 29ml (1/8 cup)

    Bring water to a boil. Mix cornstarch with a small amount of cold water and stir
    the two together. Bring, to a boil and stir until thickened. Add soap flakes while
    warm. Color.

    This recipe produces paint that seems quite lumpy but this does not affect the
    printing quality.

    Recipe #3

    Dissolve 115ml (1/2 cup) cornstarch in 172.5ml (3/4 cup) cold water

    Dissolve 1 envelope gelatin (15ml or 1 tablespoon, unflavored) in 57.5ml (1/4 cup)
    cold water

    Heat 460ml (2 cups) of water, pour in cornstarch. Add dissolved gelatin. Boil, and
    stir until thickened. Cool and add 115ml (1/2 cup) soap flakes. Color.

    NOTE: Adding 5 to 10ml (1 to 2 teaspoons) of glycerine to any of these
    recipes will make the paint easier to use.

    Never let dried particles of paint get mixed into the paint or fall onto the screen
    because they may puncture the silk during the printing. A small hole in the silk
    can be repaired with a small drop of shellac.

  10. #10
    Premium Member
    fantasygoat's Avatar


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    Makes me wonder if you could just add cornstarch to latex paint.
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