The bolt that needs to be removed in order to put on a saw blade is on so tight that i cant get it loose. there is no blade on it right now. this problem is for a bosch 12" compound mitre saw. please help
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Re: putting on a saw blade
Well M8:) try to to unloose it backwards, It dosent loose as usal, you need to posh the otherway. Nornaly you loose things from right to left, this one (and other items that cut) you loos from left to right.
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That's very unusual--do you have the right size blade on the saw---It might help if you removed the blade holding bolt so as to alow the blade float. Other then that I need more info cause what your saying to me is not possible from my point of veiw--unless the guard came loose
Sounds as if the blade is dull. Or perhaps bent. A dull or bent blade blade will 'grab' the wood, rather than cut it, resulting in binding, or kickbacks.
Solution; replace the blade with a fine-toothed, good quality blade. If the blade is new, then check that the blade is bolted tight on the arbor. If the blade is loose, it can result in kickbacks.
Also, check that all the bolts/fasteners/locking mechanisms on the saw are tight, and in good working order. Sometimes a tool new out-of-the-box will have loose screws/nuts/bolts that need to be tightened up.
Also, when cutting, use a smooth, slow, motion, being sure to give the saw the time it needs to make the cut.
Check to make sure the blade washers are installed correctly and the right order The thread is left handed on the bolt and should tend to tighten from the toqure of the motor spining If this dosn't you could try a drop of white lock tight on the threads of the bolt but don't use red locktight its to strong
Usually on portable saws there is a hole somewhere in the blade guard to put a screwdriver or something through and hold the blade still while you tighten the spindle nut etc. Hope this helps. I only have experience of a very old B&D saw which worked in this way. I now use a more modern Bosch machine which also works the same.
1st, !!UNPLUG the saw!! Wear gloves to prevent nicks from contact with the saw blades.
If this is a handheld 'skill-saw' type saw, use a piece of wood to chock the saw blade from turning as you use a proper size socket/wrench to loosen the bolt which holds the blade.
The bolt will loosen counter-clock wise. It will probably be very tight, and you will have to use some effort to loosen it.
Remove the bolt, lift the follow guard and remove the blade.
Replace the blade with a like size diameter blade by raising the follow guard, inserting the blade, replacing the bolt, using a piece of wood to keep the blade from rotating and TIGHTEN the bolt. You will almost feel as if you need three hands to accomplish this procedure but its been done millions of successful times.
I completely removed the blade and put it back on, tightening the locknut, and now it works perfectly. The blade has not come loose and have used the machine for the last 3 months. The only thing I can think of is that somehow I didn't have the blade correctly installed in the first place, although it didn't wobble or anything.
There may be a push button type blade lock, and on many of these saws the retaining bolt for the blade is backwards threads, e.i., looking at the top of blade retaining bolt, turn it clockwise to loosen. This would normally tighten, but in the case of many of these saws, it loosens it.