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In an attempt to squeeze some more life out of it I bought a new blade for my black and decker miter saw. It takes an 8 1/4" blade. I bought a 8-8 1/4" 40 tooth diablo blade at home depot and just tested it out. For some reason the blade wont cut all the way through a 1" thick piece of scrap wood. When I held up the blade next to the original black and decker blade I noticed that it is slightly smaller in diameter. Any ideas as to whats going on here?
 

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I use this blade all the time on my arbor saw - it is a good blade we use it at 4500 rpm- check two things make sure the arbor is the correct size (I believe it is 1" on the blade - not sure what the tool calls for) (i.e. not slipping) and make sure the blade is facing the correct direction. Very dangerous to have an incorrectly installed blade. Old blade being slightly smaller in diameter should not make a difference on cutting ability assuming the blade is not making contact with the safety - but believe me you would know it if it was. If the blade is installed correctly then the next thing I would check would be the motor in which case it is time for a new machine.
 

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The problem is the blade diameter. If you feel it's not then try out the old blade and see if the problem goes away. If it does, then thats all the proof you need that it is indeed the problem.
 

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Discussion Starter · #9 ·
My B&D is really old and does not have any blade height adjustments. I returned the blade to home depot but they don't have any other 8 1/4" blades. Most of the ones I see online are advertised as 8 - 8 1/4" which makes me think they will be slightly too small as well. Can anyone recommend a specific blade? Other than Forrest which is out of my price range.
 
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