Metal Chop Saw Blade

super99

Well-known Member
I have an older metal chop saw, I had to replace the blade and the new one doesn't seem to cut as fast as the old one did. It will throw lots of sparks for a while and then it won't throw any unless I really pull down hard on it. Different quality blades???
 
Probably different grit. Wheels come like sandpaper. 40, 60 80 100. The lower the number the faster and more coarse the sut.
 

As mentioned, grit, down pressure make a difference. I have a friend who did not know those abrasive blades came in different grits so didn't pay attention.
 
Had some Dewalt branded abrasive blades that would do that. I would take a pice of spring steel and hold it against the blade like a wheel dresser to break the glaze.
 
Did you cut into aluminum with it?
I've found that aluminum will melt as you cut it and stick to the abrasive blade. That will make it not want to cut.

Sometimes, you can cut into something hard and get the aluminum off, sometimes that doesn't work.
 
When that happens to me I flip the blade so it cuts opposite of what it had been
 
Is the blade wider than the old one? I have used wider blades before that makes you grind through it rather than cut through it.
 
(quoted from post at 11:21:09 01/23/21) I have an older metal chop saw, I had to replace the blade and the new one doesn't seem to cut as fast as the old one did. It will throw lots of sparks for a while and then it won't throw any unless I really pull down hard on it. Different quality blades???
've run in to the same thing. I think some brands are better than others, and I also think we can do it to ourselves with using light pressure when making a cut. Additionally, some steels are harder than others and require a lot more pressure to cut than you'd think.
 
Not an answer to you question but I usually pay around $5.00 or so for a 14" wheel. Last week I was in the local hardware store and I grabbed one and took it to the check out it rang up $17.00 I asked if that was a mistake she said no so I left it on the counter. I do use a lot of them and can't say I have had any that didn't cut any better or worse than others. The last few I have used have been Norton.
 
yea ihad some those blades do that to,its like they get sealed over,i reversed them it helped but i finally did away with those chop saws after using up 5 of them when i used to do lots of welding,went to a ellis dry cut bandsaw would never go back now. use it for metal and wood or whatever cutting. i get over three years out of blade normally,no sparks, no fumes,best thing i did
 
I had the exact same problem with some blades a supplier sent me.

Sent them back and got some Makita blades they works flawlessly.
 

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