Give each block as many coats of primer as it seems to need, letting it dry thoroughly between coats. I use a pretty low-chemical primer, but I still do this outdoors on a nice day.
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How-to: Upcycled Chalkboard Blocks out of Regular Building Blocks
What a
great idea. I think many of the kids
would love these chalkboard blocks.
Thanks for the post.
I love this idea. It will definitely renew interest in the multitude of wooden blocks we have.