remember to treat the wood with a good wood oil every once in while to keep the products in perfect condition. the following information will further explain exactly how this is done. a slight poke would break them into pieces. that is one of the areas of concern. making it more secure and more difficult to block. the same board on the other unglued side also was starting to show the seam when printed too so it is not just the glue. you don't have to worry about hitting your elbows against the wall or sink for every inch that you move inside. 