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Mitre Saw burns

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Forum topic by mvo1948 posted 02-02-2021 01:53 PM 395 views 0 times favorited 9 replies Add to Favorites Watch
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mvo1948

16 posts in 809 days


02-02-2021 01:53 PM

Does anyone here use a mitre saw? For some reason, mine seems to burn the cuts, but on one side only (see photo). I’ve tried everything I can think of, from cleaning the blade to checking it for alignment. It’s a fairly new blade, 60 teeth, and the burning happens on both angled cuts and straight. Any ideas, please?
.
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-- Martyn


9 replies so far

View controlfreak's profile

controlfreak

1967 posts in 655 days


#1 posted 02-02-2021 02:24 PM

My arm doesn’t cut that fast.

I am guessing that it is something like the blade flexing or dull teeth on one side of the blade. Others will probably do better than I on this.

View Aj2's profile

Aj2

3764 posts in 2852 days


#2 posted 02-02-2021 02:33 PM

My guess from a thousand miles away is a dull blade

-- Aj

View Lazyman's profile

Lazyman

6930 posts in 2441 days


#3 posted 02-02-2021 04:22 PM

A bunch of gunk on the blade can cause that too. Try cleaning the blade but if it is old, I would just try a new blade.

-- Nathan, TX -- Hire the lazy man. He may not do as much work but that's because he will find a better way.

View Robert's profile

Robert

4521 posts in 2535 days


#4 posted 02-02-2021 04:33 PM

Put a different blade on and you’ll get your answer.

-- Everything is a prototype thats why its one of a kind!!

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mvo1948

16 posts in 809 days


#5 posted 02-09-2021 06:01 PM

I will try a new blade. At the moment it’s too damn cold to go out to the workshop, so plenty of time to order one from Amazon.

One or two have said “if it’s old …”. It’s two or three years since I bought it, at the same time as the saw. But it has hardly been used – maybe 40 or 50 cuts at most. And it’s clean: I soaked it in washing detergent and than scrubbed each tooth on each face with a nylon pad, to get rid of what looks like reddish-brown resinous crap. Oh well, another few quod up the Swannee!

Thanks for your replies. This is such a good source of advice.

-- Martyn

View Loren's profile

Loren

11148 posts in 4702 days


#6 posted 02-09-2021 07:16 PM

Blade could be “heeling” if it’s a slider. You may be able to correct it by pulling on the saw differently or it may be a defect from manufacturing. Of course a blade could be the problem.

View tvrgeek's profile

tvrgeek

1755 posts in 2703 days


#7 posted 02-09-2021 07:19 PM

I am thinking it is a skew problem. If it was just dull, it would be rough on both cuts. I think the blade is traveling up and down, but tilted. Is this a new problem? Was it ever dropped?

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mvo1948

16 posts in 809 days


#8 posted 02-10-2021 02:36 PM



Blade could be “heeling” if it s a slider. You may be able to correct it …

- Loren

I’m not sure what “heeling” is, unless it’s that the back end of the blade’s circle of rotation is out of line with the cut already being completed by the front.


I am thinking it is a skew problem. If it was just dull, it would be rough on both cuts. I think the blade is traveling up and down, but tilted. Is this a new problem? Was it ever dropped?

- tvrgeek

And a “skew problem” sounds much the same as my take on “heeling”, but please both of you correct me if I’m wrong.

Yes, fairly new. I cut some poplar planks about 20mm thick last summer, and first noticed it then. That’s when I cleaned the blade. Hasn’t been used since then.

By “dropped”, do you mean the blade or the whole tool? I suppose the answer to either is Could be, but not to my knowledge. I haven’t ever dropped the blade, but it was delivered by post, so could likely have been dropped, tumbled or thrown during shipping. I bought the tool second-hand from a pal who had used it only to trim a pile of decking to length, after which it became redundant. I suppose he might have dropped it – in which case, that might have bent the spindle. Could this be countered by one of the three adjustments the saw permits?

-- Martyn

View Aj2's profile

Aj2

3764 posts in 2852 days


#9 posted 02-10-2021 02:52 PM

Decking boards to length. The plot thickens as the main culprit is uncovered.
These Decking boards solid wood or man made material.
Either way if they were laying on the ground or specifically dirt ground I believe we have our answers..

-- Aj

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