The Forestry Forum
General Forestry => Forestry and Logging => Topic started by: Tony on September 05, 2017, 10:14:21 PM
I've noticed on some felling vids, after the notch is cut there is a vertical cut/slice on each side, what is the purpose of this cut??? ??? ??? ???
Thanks, 8) 8) 8)
Tony
Are you referring to de-butressing cuts?
https://www.forestry.gov.uk/pdf/fctn5.pdf/$FILE/fctn5.pdf
They make this marks on each side so it's easier to see where the back cut has to stop, so you won't cut through the hinge wood
It's also to prevent fiber pull to the side of the hinge which can steer the tree after the hinge closes/breaks. Sometimes this pull is intentional to cause swing, but when you're stuck to the tree at heights with a lanyard, this fiber pull can suck you into the tree with very bad results. In climbers lingo it is sometimes referred to as "snipping the ears".