What causes circular saw to wander when cutting?





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My Makita circular saw wanders to the right, even when trying to follow a guide! Why?










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  • Is the blade warped?
    – ratchet freak
    14 hours ago






  • 2




    What guide? The included rip fence?
    – isherwood
    14 hours ago










  • Blades try to follow the weakest path through wood grain. It's up to the operator to push appropriately when moving past/through knotholes etc.
    – Wayfaring Stranger
    1 hour ago

















up vote
1
down vote

favorite












My Makita circular saw wanders to the right, even when trying to follow a guide! Why?










share|improve this question









New contributor




macmccolm is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.




















  • Is the blade warped?
    – ratchet freak
    14 hours ago






  • 2




    What guide? The included rip fence?
    – isherwood
    14 hours ago










  • Blades try to follow the weakest path through wood grain. It's up to the operator to push appropriately when moving past/through knotholes etc.
    – Wayfaring Stranger
    1 hour ago













up vote
1
down vote

favorite









up vote
1
down vote

favorite











My Makita circular saw wanders to the right, even when trying to follow a guide! Why?










share|improve this question









New contributor




macmccolm is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.











My Makita circular saw wanders to the right, even when trying to follow a guide! Why?







circular-saw






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edited 11 hours ago









isherwood

43.4k453108




43.4k453108






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asked 15 hours ago









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macmccolm is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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Check out our Code of Conduct.












  • Is the blade warped?
    – ratchet freak
    14 hours ago






  • 2




    What guide? The included rip fence?
    – isherwood
    14 hours ago










  • Blades try to follow the weakest path through wood grain. It's up to the operator to push appropriately when moving past/through knotholes etc.
    – Wayfaring Stranger
    1 hour ago


















  • Is the blade warped?
    – ratchet freak
    14 hours ago






  • 2




    What guide? The included rip fence?
    – isherwood
    14 hours ago










  • Blades try to follow the weakest path through wood grain. It's up to the operator to push appropriately when moving past/through knotholes etc.
    – Wayfaring Stranger
    1 hour ago
















Is the blade warped?
– ratchet freak
14 hours ago




Is the blade warped?
– ratchet freak
14 hours ago




2




2




What guide? The included rip fence?
– isherwood
14 hours ago




What guide? The included rip fence?
– isherwood
14 hours ago












Blades try to follow the weakest path through wood grain. It's up to the operator to push appropriately when moving past/through knotholes etc.
– Wayfaring Stranger
1 hour ago




Blades try to follow the weakest path through wood grain. It's up to the operator to push appropriately when moving past/through knotholes etc.
– Wayfaring Stranger
1 hour ago










1 Answer
1






active

oldest

votes

















up vote
5
down vote













Three things can cause wandering (or what seems like wandering). The first is a misaligned table and/or fence. The cut isn't actually wandering, but it seems like it is visually because of how the table is tracking across the workpiece.



The second is the use of modern "thin kerf" blades for rip cuts. While they're fantastically fast for crosscuts, they tend to "oil can" while cutting with the grain, which can cause severe wandering, especially with hard or thick boards. You'll have to work harder to keep a straight line or switch to a more conventional blade, wherein the heavier blade disk is more stable.



The third is user error. Are you applying rotational force as you push the saw? Are you preventing drag on the blade from doing so? The drag from the blade is slightly offset from the saw handle, so there's an inherent tendency for rotation in that direction.



I suggest a second-finger-trigger grip--use your second (middle) finger for the trigger, and place your first (index) finger along the front of the trigger guard. This gives you much better torsional control of the saw.



I've used Makita circular saws exclusively since the 1990s. They're consistently precise and smooth. Unless your saw has sustained damage or is extremely worn, this is probably worth consideration.






share|improve this answer























  • Good tip on trigger, we do these things with out thinking about them after so many years and forget unless training someone in person.
    – Ed Beal
    11 hours ago






  • 1




    I'd maybe add a final possibily that the blade is incredibly trashed - really, really dull, especially if it's asymetrically dull (someone has a habit of dropping it on concrete while its spinning down? Other abuse?). If the inside cuts poorly but the outside cuts well this can cause the blade to steer towards the sharp side.
    – J...
    9 hours ago








  • 1




    I like the "oil can" phrase for the dishing, although it can be transient: the convex side of the blade will experience more friction and expand, resulting in positive feedback (either more one-sided friction, or a turning cut to avoid it).
    – amI
    9 hours ago











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1 Answer
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1 Answer
1






active

oldest

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oldest

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active

oldest

votes








up vote
5
down vote













Three things can cause wandering (or what seems like wandering). The first is a misaligned table and/or fence. The cut isn't actually wandering, but it seems like it is visually because of how the table is tracking across the workpiece.



The second is the use of modern "thin kerf" blades for rip cuts. While they're fantastically fast for crosscuts, they tend to "oil can" while cutting with the grain, which can cause severe wandering, especially with hard or thick boards. You'll have to work harder to keep a straight line or switch to a more conventional blade, wherein the heavier blade disk is more stable.



The third is user error. Are you applying rotational force as you push the saw? Are you preventing drag on the blade from doing so? The drag from the blade is slightly offset from the saw handle, so there's an inherent tendency for rotation in that direction.



I suggest a second-finger-trigger grip--use your second (middle) finger for the trigger, and place your first (index) finger along the front of the trigger guard. This gives you much better torsional control of the saw.



I've used Makita circular saws exclusively since the 1990s. They're consistently precise and smooth. Unless your saw has sustained damage or is extremely worn, this is probably worth consideration.






share|improve this answer























  • Good tip on trigger, we do these things with out thinking about them after so many years and forget unless training someone in person.
    – Ed Beal
    11 hours ago






  • 1




    I'd maybe add a final possibily that the blade is incredibly trashed - really, really dull, especially if it's asymetrically dull (someone has a habit of dropping it on concrete while its spinning down? Other abuse?). If the inside cuts poorly but the outside cuts well this can cause the blade to steer towards the sharp side.
    – J...
    9 hours ago








  • 1




    I like the "oil can" phrase for the dishing, although it can be transient: the convex side of the blade will experience more friction and expand, resulting in positive feedback (either more one-sided friction, or a turning cut to avoid it).
    – amI
    9 hours ago















up vote
5
down vote













Three things can cause wandering (or what seems like wandering). The first is a misaligned table and/or fence. The cut isn't actually wandering, but it seems like it is visually because of how the table is tracking across the workpiece.



The second is the use of modern "thin kerf" blades for rip cuts. While they're fantastically fast for crosscuts, they tend to "oil can" while cutting with the grain, which can cause severe wandering, especially with hard or thick boards. You'll have to work harder to keep a straight line or switch to a more conventional blade, wherein the heavier blade disk is more stable.



The third is user error. Are you applying rotational force as you push the saw? Are you preventing drag on the blade from doing so? The drag from the blade is slightly offset from the saw handle, so there's an inherent tendency for rotation in that direction.



I suggest a second-finger-trigger grip--use your second (middle) finger for the trigger, and place your first (index) finger along the front of the trigger guard. This gives you much better torsional control of the saw.



I've used Makita circular saws exclusively since the 1990s. They're consistently precise and smooth. Unless your saw has sustained damage or is extremely worn, this is probably worth consideration.






share|improve this answer























  • Good tip on trigger, we do these things with out thinking about them after so many years and forget unless training someone in person.
    – Ed Beal
    11 hours ago






  • 1




    I'd maybe add a final possibily that the blade is incredibly trashed - really, really dull, especially if it's asymetrically dull (someone has a habit of dropping it on concrete while its spinning down? Other abuse?). If the inside cuts poorly but the outside cuts well this can cause the blade to steer towards the sharp side.
    – J...
    9 hours ago








  • 1




    I like the "oil can" phrase for the dishing, although it can be transient: the convex side of the blade will experience more friction and expand, resulting in positive feedback (either more one-sided friction, or a turning cut to avoid it).
    – amI
    9 hours ago













up vote
5
down vote










up vote
5
down vote









Three things can cause wandering (or what seems like wandering). The first is a misaligned table and/or fence. The cut isn't actually wandering, but it seems like it is visually because of how the table is tracking across the workpiece.



The second is the use of modern "thin kerf" blades for rip cuts. While they're fantastically fast for crosscuts, they tend to "oil can" while cutting with the grain, which can cause severe wandering, especially with hard or thick boards. You'll have to work harder to keep a straight line or switch to a more conventional blade, wherein the heavier blade disk is more stable.



The third is user error. Are you applying rotational force as you push the saw? Are you preventing drag on the blade from doing so? The drag from the blade is slightly offset from the saw handle, so there's an inherent tendency for rotation in that direction.



I suggest a second-finger-trigger grip--use your second (middle) finger for the trigger, and place your first (index) finger along the front of the trigger guard. This gives you much better torsional control of the saw.



I've used Makita circular saws exclusively since the 1990s. They're consistently precise and smooth. Unless your saw has sustained damage or is extremely worn, this is probably worth consideration.






share|improve this answer














Three things can cause wandering (or what seems like wandering). The first is a misaligned table and/or fence. The cut isn't actually wandering, but it seems like it is visually because of how the table is tracking across the workpiece.



The second is the use of modern "thin kerf" blades for rip cuts. While they're fantastically fast for crosscuts, they tend to "oil can" while cutting with the grain, which can cause severe wandering, especially with hard or thick boards. You'll have to work harder to keep a straight line or switch to a more conventional blade, wherein the heavier blade disk is more stable.



The third is user error. Are you applying rotational force as you push the saw? Are you preventing drag on the blade from doing so? The drag from the blade is slightly offset from the saw handle, so there's an inherent tendency for rotation in that direction.



I suggest a second-finger-trigger grip--use your second (middle) finger for the trigger, and place your first (index) finger along the front of the trigger guard. This gives you much better torsional control of the saw.



I've used Makita circular saws exclusively since the 1990s. They're consistently precise and smooth. Unless your saw has sustained damage or is extremely worn, this is probably worth consideration.







share|improve this answer














share|improve this answer



share|improve this answer








edited 11 hours ago

























answered 14 hours ago









isherwood

43.4k453108




43.4k453108












  • Good tip on trigger, we do these things with out thinking about them after so many years and forget unless training someone in person.
    – Ed Beal
    11 hours ago






  • 1




    I'd maybe add a final possibily that the blade is incredibly trashed - really, really dull, especially if it's asymetrically dull (someone has a habit of dropping it on concrete while its spinning down? Other abuse?). If the inside cuts poorly but the outside cuts well this can cause the blade to steer towards the sharp side.
    – J...
    9 hours ago








  • 1




    I like the "oil can" phrase for the dishing, although it can be transient: the convex side of the blade will experience more friction and expand, resulting in positive feedback (either more one-sided friction, or a turning cut to avoid it).
    – amI
    9 hours ago


















  • Good tip on trigger, we do these things with out thinking about them after so many years and forget unless training someone in person.
    – Ed Beal
    11 hours ago






  • 1




    I'd maybe add a final possibily that the blade is incredibly trashed - really, really dull, especially if it's asymetrically dull (someone has a habit of dropping it on concrete while its spinning down? Other abuse?). If the inside cuts poorly but the outside cuts well this can cause the blade to steer towards the sharp side.
    – J...
    9 hours ago








  • 1




    I like the "oil can" phrase for the dishing, although it can be transient: the convex side of the blade will experience more friction and expand, resulting in positive feedback (either more one-sided friction, or a turning cut to avoid it).
    – amI
    9 hours ago
















Good tip on trigger, we do these things with out thinking about them after so many years and forget unless training someone in person.
– Ed Beal
11 hours ago




Good tip on trigger, we do these things with out thinking about them after so many years and forget unless training someone in person.
– Ed Beal
11 hours ago




1




1




I'd maybe add a final possibily that the blade is incredibly trashed - really, really dull, especially if it's asymetrically dull (someone has a habit of dropping it on concrete while its spinning down? Other abuse?). If the inside cuts poorly but the outside cuts well this can cause the blade to steer towards the sharp side.
– J...
9 hours ago






I'd maybe add a final possibily that the blade is incredibly trashed - really, really dull, especially if it's asymetrically dull (someone has a habit of dropping it on concrete while its spinning down? Other abuse?). If the inside cuts poorly but the outside cuts well this can cause the blade to steer towards the sharp side.
– J...
9 hours ago






1




1




I like the "oil can" phrase for the dishing, although it can be transient: the convex side of the blade will experience more friction and expand, resulting in positive feedback (either more one-sided friction, or a turning cut to avoid it).
– amI
9 hours ago




I like the "oil can" phrase for the dishing, although it can be transient: the convex side of the blade will experience more friction and expand, resulting in positive feedback (either more one-sided friction, or a turning cut to avoid it).
– amI
9 hours ago










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