I am a hobbyist and I need a little help. Lately my trusty circular saw has
begun to make erratic cuts. The blade warps after cutting about 1 1/2 feet
(even in soft pine). I originally thought it was the blade itself, so I
changed that, but the new blade also warped. I am using a skilsaw 5150. Has a
bearing or bushing gone bad on me? Can I fix this or do I need to go buy a new
On 28 Dec 2004 16:36:40 GMT, firstname.lastname@example.org (SolteroDad)
Umm, now don't take this personally, because lots of people have done
it at one time or another (I'm not admittin' nuttin') but look at your
saw from the side where you can see the whole blade (or most of it).
Which way do the teeth go? If the teeth at the bottom point toward the
back of the saw, then you have it on backwards, and the symptoms
described above could apply. Take it off, turn it around, reinstall
it, and Bob's your uncle. Try it again.
Master Woodbutcher and seasoned termite
Shamelessly whoring my website since 1999
Check the foot that guides the saw, it may have come out of alignment
with the blade. If you are guiding along some edge and the blade plane
is not parallel to the edge of the foot, then you will increasingly be
forcing the side of the blade against the kerf until it binds.
If it is far enough out of alignment, you might even be forcing the
problem because you are eyeballing to the marker on the foot which is
not truly on top of the spot where the blade will be cutting.
In addition, check the washer and seat to make sure they're smooth. While
unplugged, use your hand to check for any play. If there is enough to produce
what you're saying, it should be easy to feel.
At a guess, I'd say the odds are either a burr on the washer/seat, or you're
guiding against an edge and the blade's no longer parallel.
I won't even mention the "backward" blade issue that was raised earlier. The
reason I won't mention it is that I switched mine from a general blade to a
Forest for cutting some sheet hardwood, and didn't notice the two were labeled
on opposite sides:-) Interestingly enough, the Forest did maintain a nearly
splinter-free cut, even though the edge was nearly black.
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