Burning wood in a woodstove isn't rocket science . . . you don't really need to be super exact which is why I just use the bar of my saw and eye ball it . . . sure the wood may not be all exactly 20.345 inches long . . . some may be a bit shorter, some longer . . . but as long as they all fit in the stove I'm happy . . . just means I may never win the "Prettiest Wood Pile" Contest.