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What Size for Casein Ground on Rigid Support ApproveRejectUn-ApproveSubscribeUn-Unsubscribe

Question asked 2020-07-03 08:39:29 ... Most recent comment 2020-07-05 13:34:05
Sizes and Adhesives Grounds / Priming

​Hello,

New to this site...so I'm sorry if this has been asked before. Sometimes I use casein paint as a ground on rigid supports like hardboard to paint with oil colours on top. Also under it I tend to use rabbit skin glue as a size (or a transparent acrylic 'gesso' which I have found it to be a great sealer) Just wondering if the size layer is necessary...or if just few coats of skim milk might be enough to act as a size?

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Moderator Answer (brian baade)

[2020-07-05 13:34:05]

Hi

Sorry for the belated response, I was away from a computer for a week and I do not have the MITRA moderator system on my phone. Given the silence from other moderators I guess that we are all taking a break this week.

You are probably not going to have a problem sizing with glue and coating with casein paint, but I would probably suggest just using the casein paint without an animal glue size to keep the stratigraphy as uncomplicated as possible. You could use a casein solution in its place if you require a size.

As to sizing the casein, I am not sure if that is necessary unless you require a less absorbent surface due to your oil technique. I am sure that acrylic dispersions would work. But it is really changing the nature of the underpainting. This may or may not be what you want.

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