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#1
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Saw Kickback
The kickback depends on how the blade/chain meets the surface. When
saw chain on the long part of the bar pinches, you may get a healthy pushback. However, when plunge cutting, if the nose of the bar contacts the surface, the whole bar will swing up rapidly since the chain moves DOWN at that point. One of the reasons plunge cutting is so hazardous. For circular saws, the problem is that they are already close to your legs and hands. They don't have to go far to bite you. Carpenters do remove or pin back the guard, leaving the blade in the air with the saw upside down. Most saws don't have a blade brake, so they are still spinning after the trigger is released. Do NOT cut a board laid across your knee. More than the board might get cut. Tom On Fri, 6 Feb 2009 14:42:56 -0800 (PST), wrote: Fortunately I have not experienced circular saw kickback or chain saw. I have read about it and I am wondering how strong it is, though. I know the answer probably depends on the HP of the saw, the material being cut, user posture and strength, etc. Is the force imparted so strong that a reasonably healthy guy would still be able to hold onto the saw (with two hands) or does the saw simply go flying out of your hands? Thanks, Tim |
#2
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Saw Kickback
I was helping my inexperienced Bro-in-law with some remodeling and he kept
placing his foot right behind the saw where he was cutting. Finally I took the saw, placed a loaf of bread behind it and faked a kickback. Had enough bread crumbs to stuff the turkey, but he finally understood what I meant! Keep all body parts away from the saw in anyway it or the stock being cut might fly - to the front, back, or up. He also had a tendency to want to hold both ends of the piece he was cutting - foot on one piece hand on the other end. That's a sure recipe for kick back as it easily binds the blade... "Tom Kendrick" wrote in message ... The kickback depends on how the blade/chain meets the surface. When saw chain on the long part of the bar pinches, you may get a healthy pushback. However, when plunge cutting, if the nose of the bar contacts the surface, the whole bar will swing up rapidly since the chain moves DOWN at that point. One of the reasons plunge cutting is so hazardous. For circular saws, the problem is that they are already close to your legs and hands. They don't have to go far to bite you. Carpenters do remove or pin back the guard, leaving the blade in the air with the saw upside down. Most saws don't have a blade brake, so they are still spinning after the trigger is released. Do NOT cut a board laid across your knee. More than the board might get cut. Tom On Fri, 6 Feb 2009 14:42:56 -0800 (PST), wrote: Fortunately I have not experienced circular saw kickback or chain saw. I have read about it and I am wondering how strong it is, though. I know the answer probably depends on the HP of the saw, the material being cut, user posture and strength, etc. Is the force imparted so strong that a reasonably healthy guy would still be able to hold onto the saw (with two hands) or does the saw simply go flying out of your hands? Thanks, Tim |
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