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    Accidents take a holiday as well

    My three year old grandson was propelling his little plastic vehicle with his feet as intended. It spun around and he fell backwards striking the ground heavily. Fortunately his parents went back to fetch his forgotten safety helmet. The impact onto flat asphalt depressed and pierced the...
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    Bowline slippage

    Interesting thought with the bollard, thanks
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    Bowline slippage

    And yes, I did break it at the knot earlier when I prevented it slipping. (Tappered end of the rope) under the shackle on the head. We were leaning on it. Haven't looked up the break on it but at 65% its still up there.
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    Bowline slippage

    Once close, trunk sections can be grabbed and landed. Whilst rated strength is high for dyneema its application has limits. Pleased I didn't find out when it really mattered. I wonder what else is ticking away?
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    Bowline slippage

    The application. This section has been pulled 60' uphill. The larger sections are waiting further down. Two trees blown over together.
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    Bowline slippage

    The application was to continually shorten the rope link as the 42 ton harvester pulled the large log up the slope in sections. 3/4 wire rope sling on the end of the log ensured that the soft dyneema wasn't crushed and damaged under the log. Cutting and splicing the rope into many short slings...
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    Bowline slippage

    Thanks for your info. What is a "Bury Splice"? Mineral fibre, "Steel cable" the "shortener" is a device that has been about for about a hundred years that can grasp the rope at any point. Regards
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    Bowline slippage

    This is healthy discussion for both the thread origin and interested persons. Knots are part of my every day specialised work. Constant splicing on the job is unrealistic and is not so compatable in a production environment. Mineral fibre rope and a shortener looks to more practical and...
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    Bowline slippage

    https://fb.watch/v/1fNdHh49a/ Saw an event today that has rocked my confidence. Bowline slippage on a dynema rope about 30mm. We were asking a bit, however... I always considered the bowline reduced in strength but sound. The rope was compramised so we continued the task. Some of the standard...
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    Tree fail as it happens

    Mark, thanks for the heads up. I am interested in the conditions leading up to the event to see if it fits to my model. I wanted to have the work published first but am so time poor after this storm time there isn't a spare moment. May not be back to normal work for months yet. Even William...
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    Silvey depth gauge machine HDG - 6

    Thanks Tom I had not come accross it so I have made an enquiry. Been a long time since we last caught up, hope all is well. Regards Graeme
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    Silvey depth gauge machine HDG - 6

    Thanks Serflife I have rung Madsens and they don't stock or have any Silvey grinders left. I have sourced a new 451C but am looking to fit out my workshop properly so when I come home from the bush I can save time. You know the story with long days and short nights. I don't think there will be...
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    Silvey depth gauge machine HDG - 6

    I'm trying to track down a Silvey depth gauge grinder. Might be more of a west coast item but if someone knew of old stock or one in good condition I would be keen to purchase it. In addidtion if there was a Silvey gulley machine ST M4 I would be interested in that as well. Thanks and regards Graeme
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    How do we determine tree and climber limits?

    These tasks can be impressive however shouldn't blur our focus of how we determine tree and climber limits. The reason I described the recent removal was because it caused me again, to consider this issue for myself and others. Despite climbers and tree fallers here being qualified for tasking...
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    How do we determine tree and climber limits?

    CJM To give you a scale this photo is at about 100' and applying the first of the 7 straps through the splitting and failing shell. I suggest it is larger and more fragile than Tahune at this point. Serious consideration had to be given to progress the next about 80' before cutting free the...
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    How do we determine tree and climber limits?

    CJM asked: "@Graeme McMahon can you tell us a little more about your preparation and process for the famous removal over the Tahune airwalk? Using the search here, you said you only climbed half way your first time up, and still weren't sure you'd be able to do the whole job climbing. Really...
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    How do we determine tree and climber limits?

    Serf Life and CJM Great posts I was one of those that didn't have access to training or a mentor. I suppose that is why this subject is important to me. Much of my early career I trod that thin grey line, sometimes aware of it and sometimes not. For those that had contact with experienced...
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    How do we determine tree and climber limits?

    Thanks Mark. How we mentor the current and future tree folk has much to do with our industry safety. Developing safe descisions and a continuous vigilence of hazards is important. It seems that qualifications prepare people for usual work. Many aspire to advance. "Trial and error learning"...
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    How do we determine tree and climber limits?

    There is almost another thread for fun quotes from movies that we have appied to our work. I think he says, " A mans got to know his limitations". As Gunney Highway he says, "Improvise, adapt, overcome" and Mr Schwatzenegger said, "I'll be back". But let's not go down that "rabbit hole" here...
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    How do we determine tree and climber limits?

    This pic gives a sence of scale. It is deceptive as half the shell split away for 100' and rolled away so it was actually bigger than it looks. The double ended flipine was 50' long to make a start. The three quiet acheivers that made the removal possible (L - R), Shane Jackson (Sherbrooke Tree...

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