FELLING TREE

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DCJL. I'm certainly not interested in telling you how to fell a tree. You have the right to do whatever works for you. I am just going to relate some possible problems with a deep notch and if you feel them applicable then so be it. If not, maybe someone not as experienced with tree felling can use the info. I am not saying this will happen every time, but I have seen it happen quite a bit. With a deep notch, yes the tree will start swinging down earlier with the felling cut. This may not always be a good thing however depending on the type of tree. Some trees decide to split right up the stem (as well as with too shallow a notch) because not enough forward momentum has developed as a result of the fulcrum being too much in the middle of the tree (read hinge) It seems best to have leverage come in later than earlier to avoid this scenario. Even with small trees 12 " or less, I never make my notch larger than 4" deep and only a couple of inches on 8 or 9" trees. Another problem with a deep notch, the invisible grain of the tree may not be able to hold the tree up after just the deep notch cut as a result of a hollow area in the stem or weakening of the grain by ants or disease. Then the tree starts falling the exact opposite intended line of drop.That I survived 40 years as a professional logger has to do with 3 main things. 1. Respect that I could be killed in an instant with even the simplest and most innocent looking situation. 2. Being aware as possible of all the differentiated possibilities within the tree felling area as to what could happen and 3. I approached everyday with the open mind of a child ready to learn anything else that came down the pike. No one is perfect and I pulled my blunders and dodged several bullets and lucky to be on this side of the grass but if I can help anyone avoiding dangerous things in a very dangerous entity such as tree felling, I'll always do so even at the risk of sounding like or being tagged a "know it all" I do not consider myself so by any means as there are better men than me in this profession.I wish nothing but good fortune to any tree cutters out there.

 

[Eagleview]

The greatest purpose of the "hinge" apart from directing the tree is to create a step between the stump and trunk . As a tree is falling it is still pushing down on the stump . If you were to have no or too little a "hinge" the trunk will skid straight back off the wet stump and take you out . Also if the wedge is to small it can lever the trunk up over the step and the same thing will happen . I allways leave a 2" "hinge/step" and make the mouth of the wedge at least 4" (depending on tree diametre ). Make sure your area of retreat is clear , do not walk away directly in line with the falling tree as it can do as i said , and watch for branches of other trees being thrown back at you as your tree brushes past them .

 

[DCJL]

OK, I yield to the experts. Always good to learn something new and hear the correct way to do something. Thanks for the info. Now if you want to discuss photography and digital imaging, that I can do... ;-)

 

[Berniep]

T If you were to have no or too little a "hinge" the trunk will skid straight back off the wet stump and take you out . Also if the wedge is to small it can lever the trunk up over the step and the same thing will happen .

Kick back kills a lot of people.
Thats why you treat the area behind and in front of the direction of fall like a loaded gun. Stay out of these areas. Invisible checks from lightning or wind storms can cause this at any time. On very large trees you may have to get in them some but on the smaller ones, less than double your bar lenght, you can mostly avoid being there whilke cutting.

 

[Eagleview]

OK, I yield to the experts. Always good to learn something new and hear the correct way to do something. Thanks for the info. Now if you want to discuss photography and digital imaging, that I can do... ;-)

OK then . Where can i download (for free) a program to change colors on a photo or to easily put a white background on an object ?

 

[DCJL]

We should probably PM this or start another thread in the photos or related topics as it is just slightly off topic.

Quick answer from me. I do photography professionally and am on a Mac so I do not usually deal with the free imaging software as I have Photoshop etc. etc. etc. Sorry, geez, I'm not much help around here :-(

 

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The greatest purpose of the "hinge" apart from directing the tree is to create a step between the stump and trunk . As a tree is falling it is still pushing down on the stump . If you were to have no or too little a "hinge" the trunk will skid straight back off the wet stump and take you out . Also if the wedge is to small it can lever the trunk up over the step and the same thing will happen . I allways leave a 2" "hinge/step" and make the mouth of the wedge at least 4" (depending on tree diametre ). Make sure your area of retreat is clear , do not walk away directly in line with the falling tree as it can do as i said , and watch for branches of other trees being thrown back at you as your tree brushes past them .[/QUOTE

I am amazed IH. I thought down in Aussie Land there were no trees. Just desert and some of the most poisonous snakes in the world. You sure those aren't big snakes you been chainsawing down?
Stem kickback is another reason why the slope of the notch should point down. Alledgedly there is less chance of the stem slipping back up an incline as opposed to a horizontal surface of a notch where its diagonal cut is on top instead of the bottom. It also helps to kick a stem forward as it breaks from the hinge if you use a bottom diagonal notch cut. I guess it works that way. Haven't experienced many stem kickbacks cutting in this fashion.

DCJL. How many pixels are needed for a poster size 18x24 photo reproduction?
Thank you

 

[DCJL]

DCJL. How many pixels are needed for a poster size 18x24 photo reproduction?
Thank you

Easy answer. 18x300dpi=5400
24*300dpi=7200
so 5400x7200 pixels.

Technical answer.
Depends upon your output device and its native resolution. Offset printing could be 150, 180 or 240 dpi so you would like to double that number for your original image. But... If you do not have enough resolution from the original you would like to make your image some easy multiple of the resolution of the output device. If you're using a desktop printer, like an Epson, then its native resolution is 360dpi and you would be best served by using that, but.... you probably do not have enough pixels to do that so use 240dpi if possible or 180dpi at the least. Make sense?

 

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I misled you with my question. How many pixels must the camera be for a tight reproduction for a poster size blow-up. ( I live in a rural part of the state and the local giftshop thinks large tractor type pictures will be a hit) These days I get to explore all kinds of new stuff and adventures. I also realize its not only the pixels but the quality of the lense. Carl Zeiss makes good glass for scopes so I figure they must make good lenses.

 

[Eagleview]

[QUOTE=arrowI am amazed IH. I thought down in Aussie Land there were no trees. Just desert and some of the most poisonous snakes in the world.

Ha Ha....These are instamatic shots of a portion of a tree i carried into town in 1976 on a M.A.N truck i used to drive . I was seventeen then and had been driving it for 2 years before i was old enough to get a license . This load was two logs which was the head of the same tree , the next load was a 1 log load and was the butt of the tree and the next load was another 1 log load and was the next portion up from the butt . In all , 3 loads out of the one tree . Unfortunately trees like these are no more , but after were gone they will be back...Your comment reminded me of some questions that were asked by some Americans to the organisers of the Olympic Games in Australia " Are there any ATM'S in Australia and where are they ? Will i see Kangaroos in the streets of Sydney ? And , i met a girl in Kings Cross during the war , i would like to get in touch with her . Perhaps you know her ?" I do'nt think our tourism dollar is being well spent .