After 3 hours, Beech diameter 55cm + 25 cm and thickness of the slices, I can only say, where else will fail the X39 finally to success.
Well, at Astansätzen rebounds at that thickness of stem pieces from the X39, but with initially sawing incision to about 1/3 of the stem height, this task will be tackled. First are a few pieces emerged, I use the X27 or X25 for the rest.
To say that wood is crumbles at the sight of well alone rather valid only for thinner stems. But for that it is actually too heavy.
In this respect for Grobe's really good!