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dadio

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  1. It's interesting that according to the poll, there is a good bit of variation on perspective on the subject.
  2. dadio

    Spear Cut

    People call me lucky or crazy because they lack both the skill to perform such an advanced technique, and the imagination to conceive that someone might know something they don't.
  3. dadio

    Spear Cut

    And just t show that this isn't a technique that should be reserved for the super duper expert chainsaw types, these highway workers shared this video with me and with gratitude for making their life much easier:
  4. dadio

    Spear Cut

    Here are a few old videos:
  5. I think tat the very scenario in the arborpod video is 100% predictable. When rigging the short but cut of a large limb, using a pretensioned line with overhead lowering point. You can count on a slow movement from a rip cut into the shoulder. So as long as you don't have a line or lanyard below the cut, this is the prefered cut. Safe, fast ,easy and reliable.
  6. Would it be too much to ask an instructor making a video to explain the reason why he is making an undercut or side cuts? It just seems reasonable that if an instructor knows the parameters for when certain techniques are appropriate, the reasons for their use, and when it is not appropriate to use, they may as well not keep it a secret. What is the down side? If you really understood the subject it would only take a few extra moments to share such distinctions. I asked for the Brits take on this video and appreciate your answers. My takeaway from your answers is that the you have low expectations for training organizations in general and from this video in particular. My guess is that at the time this video was made that the instructors did not have a complete understanding of the subject, and as so much of the industry has done in the past, were simply regurgitating the unquestioned teachings that they learned. And Matty I appreciate your feedback. Do you have any more detail on how "single cuts are taught and need to be demonstrated in Britain for NPTC assessments?" My guess is that they are taught in a very limited scope.
  7. The term I used was "college professor".... perhaps it's a matter of cross-atlantic semantics. I googled this: In the USA, The title of Professor is given to people that have a PhD and are teachers at any academic level. A person who is a Doctor is someone who has finished a terminal degree meaning they have completed the highest degree in their field of study above a bachelors. Mark Chisholm is also a ITCC world champion tree climber from NJ that offers professional training programs, in addition to working as a full time arborist. As a production arborist, his practices can differ significantly from his teachings. I think people that offer training and do production tree work on a regular basis are better suited to teach than one who teaches only. The main point of the original video is that SOME people that teach only are out of touch with reality, and that creates a drag on the whole industry. Until the advent of tree videos there were large segments of the industry that had never even seen high productivity in tree work. Actually I re-read the referenced post and I dd not use the term college professor, so my apologies. I use the term college teacher, by which I meant full-time college teacher, so it was a poorly written statement.
  8. Did I miss something here? This woman runs a tree service she is not a college professor, as in having a PhD. The best college professor that tried his hand at tree climbing promptly killed himself.
  9. why are they hard to explain? If your lanyard or climbing line is under the cut, use an undercut. If the limb has a rise of over 35 degrees, it can split and lift, similar to a barber chair, and potentially come down on you, so use an undercut. If the limb is long and heavy enough to split, it can pinch the bar, so use an undercut. Species that split easily are more prone to split during a rip cut, so adjust your cutting technique accordingly.
  10. This video both demonstrates and explains the combined use of the rip cut (into the shoulder leaving NO STUBS) with well placed overhead rigging point and tie off points on the limb getting lowered. Do you think Arbomaster, the ISA or any other training organization has or will ever show this type of work. I'd call it technical except its actually far more simple than the teachings of undercuts, wing cuts, and finishing with the hand saw.

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