利用者:SellsHock916
Felling a tree with a chainsaw is not a task to be taken lightly. It ought to be planned and organised and most of issues of safety have to be followed all the time. Let's start by looking into making sure you have the right equipment and safety features.
Safety first
Whenever you are using any size chainsaw you need to make sure you are wearing the right clothing. You need good sturdy boots to protect your feet from falling objects and the blade going awry; protective glasses that wrap around the face (small particles of sawdust can cause lasting harm to your eyes); ear protectors (the larger stronger chainsaws which are needed to fell timber, are very noisy so when used constantly can cause damage to the ear drums); strong gloves to both protect both hands from falling materials and to give you a better grip on the chainsaw; a helmet is important for safeguarding your face against falling debris and protective trousers or "Chaps" avoid the chainsaw from cutting into your legs.
Ensure safety of others
Ensure people in the vicinity are aware of what you are doing (make sure pets and animals are locked indoors or away from the task available) and create an area you alone will be allowed into. Also beware of sheds houses valuable inanimate objects and utility lines above your face.
Determine where the tree will fall
Before you begin any performing is essential you have a clear idea of in which the tree will land once it is reduce. Clear uneven land free of other trees is perfect. Avoid the issue from it falling onto rocks or other tree stumps as this can wind up damaging the tree. Try to visualise the tree falling at all points of the compass. What will be the safest and most preferred spot for it to fall? Also take into consideration how the tree is leaning. Generally speaking it's easier and safer to fell a tree within the direction it leans if at all possible. Once you have decided in which you want the tree to fall it's helpful to place a marker in the ground exactly in the proposed reason for contact. This should help you get your angle cut correct.
Create a getaway route
It is vital that you been employed by out an escape route on your own. You need to be in a position to retire safely from the scene within the opposite direction to where the tree will fall. However is not advised because the end of the tree which has been cut may fly up and cause injury. It should be at 45 degrees to in which the tree is standing. Look into the route you will take is totally clear, and has no trip hazards.
Create a hinge
It is important that you're precise together with your cuts here. The gun sights, or felling sights, on the chainsaw assist you to produce the right angle for the cut. The gun sight is really a line painted (or sometimes moulded) to the side of the chainsaw at 90 degrees or perpendicular towards the guide bar. To produce the correct angle, manoeuvre the device so that the line points to in which the tree will fall.
The first thing you are going to do is produce a "hinge" and also to do that you need to cut a face notch. The notch in itself is going to be an opening on the side of the tree within the direction it is going to fall - 70 degrees wide. Essentially you're making a reduce in to the tree at 70 degrees, and a cut up at 70 degrees to create a nice hole or hinge.
The Bore cut
Having made the hinge you now need to retire towards the back from the tree (you will be facing the direction where the tree is going to fall). You now need make a cut (called a bore cut) using the middle of the hinge. Creating a bore cut is recognized for causing kickback. This is when the chainsaw jumps back at the operator. If you are cutting solely on top of the chainsaw the machine will shoot up towards the body and face; if you are cutting solely on the bottom from the chain it'll pull you in to the tree and if you are using the nose (or tip from the chain) will cause a rotational kickback. Therefore the best spot to start you cut is using the bottom of the end.
Saw from the back of the tree (here's your bore cut) to satisfy the middle of the hinge you have created in front of the tree. When the cut you have made meets the hinge, gravity will push the tree forward and over. However you will even require a method to trigger that motion. The simplest method is to use a wedge. Once you have made the first bore cut place the wedge in to the cut and push it further by using a hammer. Finish cutting towards the front from the tree and once again use a hammer to push the wedge home. Once you feel the tree is falling make use of your escape route and retire away from the scene. Do not stand and watch. However do not turn away from the falling tree. Retreat to a distance of approximately of twenty feet and put yourself behind a standing tree if you can.
Congratulations you've reduce the first tree! But however often your situation is this process never get complacent or scrimp. In the need of your day safety and precision should be in the centre of the work.