I heat with wood and have a great deal of maple and cherry on hand. Unfortunately my property does not support my heating style so I buy log length maple and cherry pulpwood and process it here.
I have found that when processing the maple and cherry that it is best to cut the logs cross grain at about two inches into "rounds" or disks. I have tried three inches and more and that does not seem to work as well as the thinner cut. From there I place on a hard surface and prop one edge up and whack the piece with a hammer splitting the round into two inch thick chunks of varying size. Works great in the smoker!