By process of whittling down some wood into something you need, woodchips and bark should just be a common byproduct, don't you think? We do too. That's why this mod exists. With it, making shaped wood at a Carpentry Station will produce 5 bark as well from the trimmings. Really only makes sense if you think about it.
Credits: Kharzette
http://steamcommunity.com/profiles/76561197982906080/myworkshopfiles/?appid=440900