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Saw a video of a guy cutting below a crotch on BigLeaf Maple, and the spar split on him. Michael Harlan in Tree Life on FB. Can't share the video, maybe because it is a closed group. I don't recall where we were discussing this. Climber is okay.

Good thing to point out, Gary. A new climber on TB showed a video where his loaded rigging line was running across his loaded climbing line. He didn't know until watching the video later.

Along with TITS, LOOK LISTEN FEEL when connecting a new life support system. Test the new one with full load and slack in the old (already tested) system, before disconnecting the old one. Never interrupt setting a life-support system. Once you begin, follow through to the end. Two weeks...

TITS TIE IN TWICE, SILLY/ STUPID (person).

Brian, do you have trees that are notoriously very prone to barberchairing (not trying to start a pissing match)? Large Bigleaf maple and alder (probably our two most numerous leaf trees) are very prone, especially when growing out from over-story trees, and into house clearings. I've seen...

Link didn't work for me.

But think of the accents you could practice.

Some day this will all be live group video-chat/ video recordings. Easy to sort things out and show some tangibles examples in our discussions.

Stig, sorry for the confusion, that I don't get, still, honestly. I'm a bit sick, and definitely tired. Sometimes working off at small screen. I'm talking about spar-splitting from internal forces on the tree, not about stressors to tree-health, that can endanger the climber. Gord's picture/...

Found what I was looking for... http://www.treebuzz.com/forum/threads/split-spar-suprise.18061/

Is it a much different to have a stem suddenly pulled down with huge force, versus, a huge downward force being suddenly relieved, effectively "unbending" the stem, changing the loading within? Maybe it doesn't make sense, but spars tend to crack and split on other people, too, with good...

http://www.treebuzz.com/forum/threads/snap-crackle-pop-big-leaf-maple.18190/

We are talking hard-leaning trees, right? Not slightly leaning trees. Have you seen the video of Gord in a Bigleaf Maple, from a long time ago, with the stem-split? I'm trying to find it. Why do you chain below your cuts, not just above?

I like straight forward.

You guys have had hard leaning straight-grained trees start to pop and crack when cutting, right? Crotches/ interruption in the grain limits this, clear, straight grain exacerbates this tendency to split. Which would you rather cut, hard leaning knotty wood, or straight grained clear wood?

"about" should have been "above". Edited.

EDIT: I could use a pro proof-reader. A small piece can trigger a split. IF the tree had a heavy lean, and it has weight relieved, it will go into a state of internal tension that it hasn't had before, as it wants to 'stand up' from being 'bent over'. When I'm chunking a bigleaf maple that...

Gary, to what did you attribute that peel?

Fair enough. Well done. I wouldn't want to approach a situation with a cut-my-way-out plan. I'll use a rope lanyard without a stopper knot for full stregth connection. Length has to be long enough, and short enough.

That was a very controlled cut with the saw, not at all like trying to cut while Sh*T is hitting the fan. I don't consider a flipline cut-proof, by any means. I've cut through two layer of chaps, into the log when set up in a similar way, for demo. ms440 I'll take some protection over no...