I'll be 69 next month and have heated with wood that I've harvested for the past 35 years or so. A couple weeks ago when I was working up a large oak tree on my property I had something happen that could have resulted in a very serious injury, but luck was on my side and I learned a valuable lesson. Here is what happened: The oak tree I was working up had blown over in a storm, so it was up off the ground with the root ball supporting one end of the tree and the large top limbs supporting the top of the tree at the other end. As I was cutting off the larger limbs I encountered one that was about four or five inches at the trunk and extended out from the tree a good 20' or more. This particular limb ended up being wedged behind a smaller sourwood tree about 8' from the trunk and I could tell there was tension on the limb since I couldn't move it when I tested it.
I was going to cut the limb off at the trunk, but the tension on it made me leery of getting my chain bar pinched if the pressure on the limb was forcing the limb upwards instead of letting gravity pull it downward. Instead of risking getting my saw stuck I decided to first make a cut just beyond where the limb was pinned behind the sourwood tree since I knew that part of the limb would fall to the ground in the normal fashion when I cut it off. Once that added weight was gone I thought there would be less chance of pinching my saw when I made the final cut down at the tree trunk.
Here is where I did my bullet dodging. The limb was about parallel with the ground about five feet up in the air. I was making my cut about three or four inches beyond where the limb was pinned behind the sourwood tree. As luck would have it I was positioned to the side of the sourwood tree toward the end of the tree limb which extended another 10' or 15' out in the air. The limb was about three inches in diameter where I was making my cut. I cut straight down on the limb and as soon as the saw passed through the limb the 8' of limb still attached to the tree sprang free of the sourwood tree and shot out like a released catapult with tremendous force and traveled about 4 or 5 feet before rebounding for several more swings back and forth. Had I been standing with even six inches of my body to the left of the sourwood tree where the limb was pinned I would have been nailed and there is no telling how seriously I would have been injured, or even killed.
It all happened so quickly that it took me a few minutes to reconstruct what must have happened. I was certainly correct in my assessment that there was tension on limb being pinned behind the sourwood tree. What I didn't consider is that the limb could possibly be released from it's pinned position by me cutting off the section that was several inches beyond where it was pinned. Since the remainder of the limb that was attached to the main tree trunk was still going to be pinned in place I didn't consider any risk of it springing free as it did. What must have happened is the sourwood tree it was pinned behind had a slight angle to it leaning in the direction of the end of the limb. The weight of the section of limb that I cut off must have been pulling downward enough on the limb that once it was cut free the loss of its weight allowed the part of the limb pinned behind the sourwood tree to slide upwards enough to come free from the sourwood tree since the tree was angled away from where the limb was attached to the tree. That upward movement was just enough to let the limb move those 3 or 4 inches so that that part of the branch that had been pinned behind the sourwood tree was now released and the limb could spring back to its normal position in space, which was several feet in front of the sourwood tree.
I'm a fairly cautious logger and try to think things through before I take action. I had never before encountered this exact situation I guess and I thought I had reasoned things out safely. The only risk I was thinking about was the risk of getting my chain bar pinched and my saw stuck in the tree limb. It never crossed my mind that the limb could come free from behind the sourwood tree when I was cutting it off beyond where it was pinned. Lesson learned.
I was going to cut the limb off at the trunk, but the tension on it made me leery of getting my chain bar pinched if the pressure on the limb was forcing the limb upwards instead of letting gravity pull it downward. Instead of risking getting my saw stuck I decided to first make a cut just beyond where the limb was pinned behind the sourwood tree since I knew that part of the limb would fall to the ground in the normal fashion when I cut it off. Once that added weight was gone I thought there would be less chance of pinching my saw when I made the final cut down at the tree trunk.
Here is where I did my bullet dodging. The limb was about parallel with the ground about five feet up in the air. I was making my cut about three or four inches beyond where the limb was pinned behind the sourwood tree. As luck would have it I was positioned to the side of the sourwood tree toward the end of the tree limb which extended another 10' or 15' out in the air. The limb was about three inches in diameter where I was making my cut. I cut straight down on the limb and as soon as the saw passed through the limb the 8' of limb still attached to the tree sprang free of the sourwood tree and shot out like a released catapult with tremendous force and traveled about 4 or 5 feet before rebounding for several more swings back and forth. Had I been standing with even six inches of my body to the left of the sourwood tree where the limb was pinned I would have been nailed and there is no telling how seriously I would have been injured, or even killed.
It all happened so quickly that it took me a few minutes to reconstruct what must have happened. I was certainly correct in my assessment that there was tension on limb being pinned behind the sourwood tree. What I didn't consider is that the limb could possibly be released from it's pinned position by me cutting off the section that was several inches beyond where it was pinned. Since the remainder of the limb that was attached to the main tree trunk was still going to be pinned in place I didn't consider any risk of it springing free as it did. What must have happened is the sourwood tree it was pinned behind had a slight angle to it leaning in the direction of the end of the limb. The weight of the section of limb that I cut off must have been pulling downward enough on the limb that once it was cut free the loss of its weight allowed the part of the limb pinned behind the sourwood tree to slide upwards enough to come free from the sourwood tree since the tree was angled away from where the limb was attached to the tree. That upward movement was just enough to let the limb move those 3 or 4 inches so that that part of the branch that had been pinned behind the sourwood tree was now released and the limb could spring back to its normal position in space, which was several feet in front of the sourwood tree.
I'm a fairly cautious logger and try to think things through before I take action. I had never before encountered this exact situation I guess and I thought I had reasoned things out safely. The only risk I was thinking about was the risk of getting my chain bar pinched and my saw stuck in the tree limb. It never crossed my mind that the limb could come free from behind the sourwood tree when I was cutting it off beyond where it was pinned. Lesson learned.