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No no, in the bottom of the jar is this gooy stuff that is like blue tac, just scoop that out and use that, dont use the liquid or the figure will be shiny.
Not going to go on the figure very well unless you intend putting it on with a trowel.
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Sounds totally wrong to me. I'd like to see the results of your figures using this method, got any pictures?
Maybe I and the paint manufacturers have got it wrong, as per instructions on the labels, I've always thought you stirred paint to thoroughly mix it. With jars and tins using a stirrer of some description or in the case of bottles like Vallejo etc. by shaking and striking it on the palm of your hand. I've seen comments were people have got a shiny effect to their paint and the usual response and answer is it wasn't stirred enough, so I find your comments strange.
By the way for Tamiya paints they do a product to ensure a matt finish anyway. It's called Flat Base X-21 and you mix this with paint to ensure the paint achieves a matt finish. You don't apply it to a model on its own to matt it down, that seems to be a mistake some have made. Its an additive not a finish in itself.
Alan