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I'm curious. Is the marble dust necessary in the first step? You end up sanding it smooth anyway, so why not just use the dust in the final stages?
Since my primary interest is in drawing (for now), this has gotten my attention. I haven't been happy drawing on sketch pad paper.
More questions:
What ratio of marble dust to gesso do you use?
Where can I buy marble dust? I've located it online,but I'd like to pick it up locally. Is it a hardware store item, or strictly an art supply? We have no art supply stores in my town, and I want to avoid driving 30 miles to look for it.
Is there a suitable substitute?
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