Every chainsaw user from the experienced to the amateur should have insights on how to prevent and deal with a pinched chainsaw. A pinched chain and bar is dangerous and frustrating as well. Pinching occurs when two ends of the log squeeze together when cutting a log that has a lot of weight, thus pinching the saw blade. It can lead to kick back and injuries at times hence the need to understand how to prevent it from happening.
Mostly pinching of the chainsaw happen during bucking limbs of trees on the ground or making cuts downwards into the wood. The downward force causes the log to close up, especially in cases where the ground lacks a perfect level.
Texts By AtlanticWoodworking.com
How to prevent the chainsaw from pinching
Several techniques can be used to avoid a pinched bar and chain as well as help to save on time. This article explains in details what is entailed of the user. It also highlights on how to handle the chainsaw during the cutting operations.
Using available materials in the woods
Technically, pinching mostly occurs when cutting logs and woods that are on the ground. The primary step is always to clean up the area to give room for a comfortable working area. The logs being cut are supposed to be firmly held on a well-leveled ground. Sometimes, several areas might not be straightened up well causing the formation of a gap between the logs and the ground.
Small pieces of woods or limbs come in handy in such a situation. The small pieces of woods and limbs should be stuck inside the small gaps to level the wood being cut and the ground. If there is room for more limbs and woods, then by all means necessary, put several pieces.
The idea of placing the small pieces of woods is to tension off the tree. They serve the purpose of a sawhorse only that there is no lifting of the large logs to place the smaller pieces of woods. The contour of the ground or the land is what is used.
In case one tries to make the downward cuts with an open area under the log, there will be a downward force which will cause the pinching of the chainsaw. Also, to find the pieces that fit perfectly, an ax or a hatchet can come in handy in cutting the pieces.
Using the Wedges
Wedges are known for felling trees, cutting firewood and bucking already felled logs. The wedges come in handy in preventing the pinching of the chainsaw. They are affordable and are made using very strong plastic materials, thus possesses no risks of damaging the chainsaw.
When making a top to bottom cut on the logs, the cut should be made approximately three quarters way into the trunk. This is where the wedges come in place. It is ideal to pound a wedge into the top of the cut before it begins to close up on the saw to prevent the cut from closing up. It allows the user to cut through the log successfully without issues.
When cutting a log that is supported on both sides, the first cut should be made at the top, also known as the pressure side. It should go a quarter way into the log. The second cut should come from the bottom, also known as the tension side. It should be in a direct line with the first cut.
In the case where the log is supported on one side, the opposite of above should be done. The first cut should be made from the bottom side, also referred to as the pressure side in this scenario. It should go through a quarter way into the log. The other cut should be made from the top, known as the tension side in this case. Just like the other one, it should be in direct line with the first cut.
Pinching of the bar and chain can cause damage, and waste of time and energy while trying to resolve it. It is advisable to be careful during the cutting operations and to follow the right procedure to avoid such problems. Also, following the techniques mentioned above can go a long way in preventing a pinched chainsaw.