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:thumbup: Stig this information is helpful. I can understand that such a method would be devised for a purpose or function. It may never have been intended to be applied to all ages of or species of trees. I cannot apply it to hard wood or softwood felling here. Those advocating its...

Chris, you have set out an origin and an order of events that makes perfect sense to its evolution here. The concept you put that "...until everyone thought that this was the only and "Correct" method for every tree!" is so true. In Victoria here, arborist trainers only have to hold the...

I hear you Stig, I chase trees off their stumps as well when I feel it will work or I have too. :O That was a great opportunity for students and trainer to come and see the work being done. It was a mistake by the trainer to spoil it. A short story. I had and arborist trainer say to me in...

:thumbup: You're right; WorkSafe Victoria (here) "may" be the place to have it sorted. At least it would force the various training providers to produce their information sources. Unfortunately here OH&S refer to "current industry practices". If enough arborists utilise incorrect methods it...

A perfect summary regarding the waste of time and effort if using wedges in a back release. One of my employees was at arboricultural training and doing his tree felling part. He showed me what they expected him to do (notches, hinges, wedges etc) so I rang the trainer in charge to try and...

I agree with your summary. I cannot see how anyone could consider wedges placed behind the hinge are a good idea. The source of that poor information, insulated from scrutiny remains a large part of the problem. It took a while to determine the purpose of that demonstration. When the tree...

Ok,:drink:

Some arb training here is assessing this as part of faller competance. They also have trainees placing wedges in back release trees. The pitty is that there is a void between arb and logging faller training. Your second comment spot on. It is at a mechanical disadvantage.:?

I saw the pics in this thread, looking for a loggers perspective regarding its origin and thought "The logging thread" however there is a lot of notch talk in "Question for Stig short..." and "Patron saint of bore..." / Tree felling and rigging. I look to you for such wisdom MB. I'm trying not...

MB If my post belongs in the logging forum put it there please. I didn't think that through. Regards

I've been absent from the forum for some time and am not sure if this has been covered. The logging industry here regards the shallow, open scarfs (notches) and wedges placed immediately behind the hinge as a joke. Shallow notches here increase some risks to the faller and reduce tree control...