Funny, I did a wildlife-habitat high-stump, triple-stack yesterday, just from the ground. Poops and laughs.
Homeowners put in new electrical service to the cabin a year or two ago, but didn't take down a lot of dead trees, however it was a root-pulled, live willow that took the line down, and tipped the mid-span pole with meter. Pulled tight against the power mast on the house, but didn't damage the house. Roots took a bit to rip out, using the 12' lever of the trunk, so it might have been a slow-speed root failure.
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I did get good fiber pull from an overly thick hinge and hard pull on this other one. Tapered was not intended, particularly, as much as being sure I didn't lose the dead tree to the power line, and I was in an awkward cutting position, as I cut my seat too wide, and ended up with a down-sloping board. They are so useful, just don't cut your seats too much.
As you can see, I did have to clean up that far side, as I missed my Humboldt by a kerf-width.
Best time, I'll mark my board's seat before cutting.
This being dead, and relatively small diameter, I didn't want to cut deeper for a tighter seat.
18" at the hinge.