The raw wood results in the expected paint drips to be absorbed thus permanently staining the wood - unlike my ceramic palettes that I can easily clean. I'm planning to seal the wood. I also wish that the holder came with a lid for easy travel. I will need to find another option. I also bought 1/2" plastic pipe caps to hold the refills (and prevent staining as they are not wrapped.) In sum, I think the design has potential, but needs some modifications to give me what I'm looking for. (Love the paints themselves though.)