Today in my acrylic class with artist Gino Rubert. We prepared a surface for the wooden frame with some pigment, blanco de España (something like chalk powder) and acrylic medium. After apply the mixture to the surface, sometimes there might be some tiny bubbles. Gino said "Bring this outside and smoke, blow the smoke to the bubbles, they will disappear".
I think only mine, the surface still have tiny bubbles!
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