Sandrajoy
I have some round wooden boards - I'm planning to use alcohol inks and then cover them with UV resistant varnish and resin. What is the best coating for the raw boards - gesso?
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Jacquardmod Jacquardmod
Gesso is fine, but it might be a little porous making the inks sink in more.  You could also use a semi or glossy acrylic to make a more reflective surface that the inks will spread on.  

Afterwards, you should seal it by spraying on light coats of Krylon Kamar varnish.  After it is completely covered, use the UV varnish of your choice.  
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