18 x 18
This is the first time painting on this type of support and I found the natural wood an excellent surface for the melted beeswax. I highly recommend trying it. I usually prime my panels with encaustic gesso, but with this one, I could eliminate that step and get right into the first layer of the painting. The depth also eliminates the need for a frame and keeps any warping from happening. The sides can be taped and left raw, or painted with acrylic paint.
These panels are also ideal for mixed media work because they will take a lot of scratching and scraping and it is strong enough to glue heavy objects onto it.