i have been working on my neighbors HUGE white oak that had fallen this past winter. i think it has shortened my life significantly. it has to be the stringiest, knottiest, largest tree i have ever done. far surpasses the large hickory that i cut up 2 years ago. it seems like no round is easily split. none. i actually called "uncle" and said "no more"... he has a logger coming in to take the rest of the 36" diameter logs that are left. i have learned that there truly is a sweet spot for the perfect size rounds i like. 12-18 is perfect. over 20, epecially with heavy wood like oak simply makes so much damn work just to get it prepared for a final splitting... i have lots of work left to do, but should have 2 years of oak starting in 2015. sorry just wanted to vent a bit.