At some point, splitting becomes pointless, I assume. So, what is the wood diameter below which you guys don't split? 4"? I am building (dreaming of) a splitter, and want to center the splitting wedge on the wood. Thus, I need a range of wood diameters (for my situation) so I can use a 4-way splitter and have similar sized pieces split out. I have not seen a splitter yet (pretty new to this, though) that takes wood diameter into consideration; the wedge goes along the I-beam (or is welded to it) at a height determined by the cylinder's diameter, not the wood's. I am sure splitters are made that way for the manufacturer's convenience, but I see that as a "fault". OK, it is splitting frog hairs, perhaps, but I see a better design coming.