This winter I plan to make my own hiveware. It seems that the select pine is preferred due to the lack of knots in the wood. My question is why does it matter as long as the knots are sound? if the wood is dry and the knots have not split then why would it matter? It's going to be painted anyways. Now, I can see if the knot is the size of a baseball you would look for better but walnut size?