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Old 06-24-2019, 01:51 AM
Jon Bradley's Avatar
Jon Bradley Jon Bradley is offline
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Join Date: Jan 2015
Posts: 494
Smile Technical question regarding ink viscosity

I'm experimenting with some work with ink of various colors and I'm curious if anyone has some feedback on ways to increase ink viscosity, or if there are additives that are used or useful for this purpose.

Thanks, guys!
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Old 06-24-2019, 06:25 AM
pedlars pen pedlars pen is offline
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Re: Technical question regarding ink viscosity

Not enough info to give a useful reply I'm afraid, What ink do you want to make thicker ? & What pen are you using?
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Old 06-24-2019, 11:29 AM
blackandwhite blackandwhite is offline
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Re: Technical question regarding ink viscosity

Acrylic inks: add acrylic medium. Sometimes even a small amount of thick medium will produce significant increase in ink viscosity.

Other water-based inks are more problematic. If you do not need water-proofness, adding CMC gel (e.g. 2% carboxymethyl cellulose (CMC) in water) will work with most inks, but the dried ink will most likely dissolve in water.
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Old 07-26-2019, 10:09 PM
walkaboutcamera walkaboutcamera is offline
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Re: Technical question regarding ink viscosity

Use fluid acrylics or the in the case of liquitex soft body. That is artist grade fluid acrylics not the crafters stuff. The artist grade fluid has the same pigment load as the heavy body but less viscosity, how that is done, haven’t a clue. The fluid acrylic is too viscous to be ink so add air brush medium until you get the viscosity you want. Or just add water what ever you are comfortable with. Golden did some tests prove that water in acrylic is not a problem.

Last edited by walkaboutcamera : 07-26-2019 at 10:11 PM.
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