bore cutting leaning trees

[Maui Palm & Tree Care]

How many of you guys use the bore and back strap release technique for large diameter soft wood trees with a lean? i worked a volunteer job to clear African tulip(spathodea campanulata) trees at the Keanae, Maui YMCA camp property and found that these soft wooded trees tend to split at the trunk when the tree is falling and have the tendency to barber chair once in awhile. so safety wise share your falling knowledge of falling leaning trees that are known splitters. thanks

 

[JeffL]

Bore cut it and release the strap. Do it on big tops too so I don't worry about slabbing the trunk. You answered your own question.

 

[Maui Palm & Tree Care]

interesting you use it on tops as well? ill have to give it a try sometime.

 

[southsoundtree]

Smaller face it better, while retaining enough hinge width to do the steering necessary.

Release the backstrap from below the bore cut to avoid the saw getting thrown.

A chain and binder will do wonders, too, but then you have to be able to get the chain out from under the log. If you prepare by putting something on the ground for a spacer, like a good sized branch or log chunk to keep the chain/ binder off the dirt, and you'll be able to pull it or cut it out easier.

Coos Bay is an option, though I don't have experience with this cut.

 

[JeffL]

And by tops I mean entire large tree sections. Like say a 60' lead in a multi stem pine on a windy day. Lol

 

[AxeTree]

i bore cut a lot, any time were pulling a tree over with much force or if its leaning i will bore to make sure it doesent barber chair

 

[NeTree]

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Bore cut it and release the strap. Do it on big tops too so I don't worry about slabbing the trunk. You answered your own question.

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+1

 

[fireaxe]

Strapping good. Bore cutting good. Cut the strap in to out.

If you are really worried about splitting, bore out the center of the notch face if you have enough tree to work with. I need to slow motion photo some examples, but this method reduces greatly the possibility of barber chair. Think of the differences between piano hinge and strap hinges. You do not necessarily need the entire length of hinge and you definitely want it to use the leverage
force to bend and not to split.

 

[Treespotter]

[ QUOTE ]
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Bore cut it and release the strap. Do it on big tops too so I don't worry about slabbing the trunk. You answered your own question.

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+1

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Ditto

 

[Daniel]

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If you are really worried about splitting, bore out the center of the notch face if you have enough tree to work with. You do not necessarily need the entire length of hinge and you definitely want it to use the leverage
force to bend and not to split.

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The Brits call that cut a "letterbox"... I showed it on little back leaning maple some time ago and "everyone" freaked out.. NO ONE bothered asking what it was used for.. in that case it was used because I was concerned about the top breaking out, as there was no real good spot to tie off the pull line.. Letterbox made for less resistance in the hinge, thus less force needed to trip the fall, and less chance of breaking out the top..

 

[southsoundtree]

Americans call that gutting the hinge.



What were people's concerns, Daniel?

 

[Tino]

I bore cut nearly everytime regardless of lean, it allows me to set the hinge to the correct thickness and best of all it allows me to take one final look around and check that everything is safe to proceed before cuting the strap at the back.

 

[Daniel]

Its good to practice the plunge as much as possible until you have it mastered... that way when you do really need it, you can trust your skills..