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20 Geometric coloring pages for adults

Fine work that still holds a pencil tip. Nothing on these pages is under 2.4 mm across.

Printing a stack of these? The pencils we'd use — and the one thing that matters more than the brand.

Why every page says a millimetre number

A coloring page fails in one specific way: an area too small to get a pencil into. It is invisible on screen and obvious the moment someone tries to color it. Before anything is published here, the artwork is laid out at print size, every enclosed area is measured, and the largest circle that fits inside the smallest one is recorded. That number is printed on the page.

For detailed pages the rule is 2.4 mm, and a design that misses it is regenerated rather than published.

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