CIY - Create with Chalkola — how to test surface if its non porous

If in Doubt, Test First

Posted on 05-Mar-2017

There are few things more frustrating than finding that you’ve used your chalk markers on the wrong surface. If you’re not sure that a surface is non-porous you can save yourself a lot of trouble by testing it. First, find a place on the surface where you would not be upset to see a mark. Then use a liquid chalk...

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