I can't change the blade on a B & D miter saw.

Are you *absolutely* sure you're turning the arbor nut in the right direction to loosen it?

Black and Decker? I thought they just made disposables. If the blade is dull throw outthe saw and buy one with a fresh blade. ;^)

Actually, if it is slipping when you hold the balde then it isn't so tight it shouldn't be able to break it loose. If there is no obvious brake, which I assume there isn't I can think of two options.

1. See if there is any cooling opening in the moter wherby you can gently JAM in a screwdriver or other implement to hold the motor while you work the nut.

1. If you have a hammer\impact drill and can set it up with a socket, that will surely breal it loose, as long as it is spinning the right direction. Nothing works better than vibration. Along that same line, holdingthe blade and doing some light tapping on an open end or box wrench can have the same effect.

Also might try some wd40 or other penetrat> Black & Decker miter sale model 7715 type 3.

I don't know if you have the manual or not, but it says to push the blade into the table top to keep it from turning. Doesn't sound like that will help you much if the arbor is still turning.

the saw, the guy help up three fingers and said, "four years."

ROFL .... now to get the coffee out of the keyboard ;)

diggerop

I'm not familiar with this particular saw, but many have a little "button" near the point where the shaft protrudes from the housing that fits into a keyway or kerf in the shaft. If there is none, I'd consider jambing the blade as suggested, then using an air impact wrench to loosen the bolt holding the blade to the shaft. Also, be sure to look and see that the bolt is designed to turn the way you're turning it. For a shaft protruding out the right side of the motor, it's normally a ccw operation looking toward the motor from the bolt. For a shaft on the other side, like on a RAS or many chop saws, the bolt is typically the opposite thread, as I recall.

Nonny

"Dave - Parkville, MD" wrote >> Black & Decker miter sale model 7715 type 3.

Tom, make sure you are turning it the proper way. All saw blades, no matter what piece of equipment, need to have the nut the same direction as the saw blade turns to remove. I assume your motor is on the right, blade on the left and that it turns clockwise when running. Turn the nut clockwise to remove.

As others have said, I'm fairly sure the saw has an armature lock (the one that shows up on Amazon does). If you can't find one, use a scrap piece of wood set just like you planned to cut it. Cram the blade into the board. Turn the nut clockwise. If the armature turns and the blade does not, there is a different problem - the threads are hurt or the nut is rusted on.

Hello Tom,

My Craftsman hand saw started doing this same thing last year. I think a brake went bad!? But I am able to change blades. I have a "nut" on the rear of the blade that I have to hold while turning the front arbor screw. This keeps the shaft from turning. I hope this is helpful.

Mike > Black & Decker miter sale model 7715 type 3.

In addition to the other good suggestions, slather the nut and shaft with nut-release juice.

I'm SURE I got some spam with that in the Subject line.....

If there is enough space between the nut and the end of the shaft drill a small hole through the shaft end so you can get a awl or other rod in place to hold the shaft still while loosing the nut.

I don't think I have ever seen so many stupid answers to a question in my l ife. The saw has left hand threads. Instead of turning it counter clock wis e, turn it clockwise to loosen it. Jan the bland into a small scrap of wood . use a box wrench and hit it with a hammer. A couple of good smacks will l oosen it.

Jan the bland?

FWIW not all saw fixing nuts or bolts loosen clockwise.

The fixing nut or bolt loosens in the direction that the blade spins when cutting.

Refrain from using a hammer.

Jan the bland? Auto correct screwed up. Was supposed to say, "Jam the blad e into a scrap of wood." LOL, you said exactly the same thing I did except I used the words clockwise and counter clockwise. The blade cuts in the clo ck wise direction, the bolt loosens in the clockwise direction. I have the same exact saw. Left hand thread. Tapping the wrench with a hammer is just about the same as an impact hammer but with less damage.

Never jam anything into the fan blades of the motor.

Did they have auto-correct in a newsreader back in 2009?

I certainly hope he got his blade off by now.

Turn it counter clockwise

Turn clockwise actually