Question about Saws

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Stuck blade i have tryed wd40,hitting the spaner with a hammer but the blade still wont losen, I cant move the nut that holds the blade in place. I was thinking to trash it ? The tools blade is all over it wont even burn through the wood it needs to be changed. The problem is I can not for the life of me remove the nut holding the blade in place?. The issue is that I can get it to budge and will enough pressure applied the blade spins before the nut loosens even with the blade brake on?? I even tried putting the blade down on a 2x4 and the blade just endes up spinning through the wood before the nut will turn. I have no idea why Over tightened? Rusted?? Anyone have any ideas? I dont really want to spend out to get a new one. Please help! i have tryed to turn the nut both ways just i case

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  • r_ianr Apr 22, 2009

    hi, thank's for your reply but the blade is still stuck.the saw is a metabo kgs 255. Is it worth trying to heat the blabe up with a blow torch or some thing? (would it be safe to do that)

  • r_ianr Apr 22, 2009

    hi, thanks for replying , i dont have a torch hand so i cant try that idea untill the weekend. you can look a picture of the saw on this web site if you want (but dont buy one in case blade gets stuck)
    http://www.transtools.co.uk/store/prod_1...
    if you have any more ideas i would be greatfull. as soon as i try the torch i will post back to let you no if it worked
    thanks again



  • r_ianr Apr 22, 2009

    hi, thanks i no its a left handed thread i have only hit it the wrong way it try to free the problem,but i will have a look at the manual

  • Samuel Charles Spriggs May 11, 2010

    Perhaps you are turning the nut in the wrong direction. Overhead saw motors (chop saws, radial arm saws) have left handed threads and to remove them you turn them clockwise.

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I looked for a picture of this saw -- couldn't find one. When you wrote that you put the blade down on a 2x4 that sounds like a chop saw. In which case the balde is attached to the motor shaft.

A torch is kinda extreme, but if you do it safely & quickly it might work. If the blade is on the motor shaft, you don't want too much heat to get into the motor.

You don't want to heat the blade. Heat the nut only -- the nut will expand more than the shaft and perhaps break loose. I wouldn't heat it more than 20-30 seconds and make sure the flame is directly on the nut. Also make sure all flammable stuff is out of the way (like sawdust).

I wouldn't expect the heating to allow you take it off by hand -- you'll probably have to try all the brute force measures again -- and remember the left hand threads.

Posted on Apr 22, 2009

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What kind of saw? (Because Bosch has reverse threads). Here are some instructions for a user of a mitre saw, click here
Sometimes there is a facet on the washer on the other side of the blade that allows you to use two wrenches, one to hold the blade still and the other to loosen the nut.
If not, you can usually use a block of wood and wedge it into the teeth to keep the blade from spinning.(or a piece of plywood). If it's a table saw the nut needs to come off counterclockwise. Maybe you could put a vise grip on the blade and wedge it against a block. Then try some firm taps on the wrench with a hammer, Firm, quick taps.
Or use a long piece of pipe or something on the wrench handle to give you more leverage.
I guess it won't really matter if you ruin that blade, because otherwise your saw is no good.
You may want to replace the nut when you're done.

I hope this information allows you to resolve this issue. If you need further assistance, please post back with a comment to this thread.
If I've managed to answer your question or solve a problem, please take just a moment to rate this post....thanks!

Posted on Apr 21, 2009

  • efs_perpends
    efs_perpends Apr 22, 2009

    Here's a link to the owner's manual for your saw:
    http://www.screwfix.com/sfd/i/cat/pdfs/6...
    You'll see on page 13 that it is a left handed thread, so you've probably been itightening instead of loosening.
    I hope that helps!


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Where is the reset button on hitachi chop saw

Posted on Jun 05, 2010

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