Question about Saws
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
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.
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Posted on Apr 21, 2009
Where is the reset button on hitachi chop saw
Posted on Jun 05, 2010
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Posted on Jan 02, 2017
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