Once the blocks are completely covered in primer, you can begin to paint them with chalkboard paint. You can find chalkboard paint in several colors, and you can also make your own chalkboard paint, but I’m using plain black store-bought chalkboard paint left over from previous projects. I do like black chalkboard paint the best as a surface that shows off the chalk art the most vividly.
Again, you will need several coats of chalkboard paint until each block is completely black and smooth and evenly covered, letting the blocks dry thoroughly between coats, and then for at least 24 hours after the last coat before you play with them.
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