Enamel thinners with acrylic varnish should not be a problem but it is always wise not to be too agressive removing excess wash with a brush or cotton bud. One point - I would leave the acrylic varnish to cure properly, at least 24 hours, before applying washes.Thanks Barry. I normally use oil washes over acrylic varnish I was just a bit worried the the thinners in the wash may be a bit hot.
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