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Posted

I have a dremel tool and will be loaning it to a friend. My friend needs to put a different bit on. I can't seem to get the bit off. I have the small open end tool to turn the bit but I'm not sure which way to turn the wrench. The bit turns clock wise so I'm guessing that I turn it counter clock toget it off.

 

Any one know which way I turn it to take the bit off. Before I put a lot of pressure on.

Posted

If you remember and you will...... that the nut should turn counter clockwise to loosen and the end has a collet so even when you get it loose the "bit will tight" push it against the table or something and it will loosen up. The collet really hold the bit.

Good luck!

Bubber

Posted

It won't loosen when I turn the wrench counter clock wise.

 

I've attached a picture of it.

 

I first press the small chrome ball bearing looking button, then turn the bit it until it locks in and won't turn either way. Then I turn the wrench counter clock wise and I end up just pushing the ball bearing button up.

 

Maybe I could call you?

Posted

Normal right hand thread.

Righty tighty lefty loosy.

 

I notice the plastic collar is missing on the end. that collar must be there to hold the lock button in place.

Posted

It sounds to me like the lock mechanism is just worn. Carefully use a channellock pliers to hold the ball down and then turn the nut CCW. Don't grip the channellocks too tightly or you will crack the casing on your Dremel.

Posted

I sprayed some liquid Wrench on the bit shaft. Put a vise grip on the small chrome ball and locked it in place. Took the wrench and cranked on it a bit, but not too hard. I tried to treat it like a head bolt by turn it tight some then loose some then repeat it several times. Nothing is losening. It can't be that hard...could it?

Posted

There is supposed to be a nut on that coarse thread at the nose of the tool.

The nut holds the 2 halves of the plastic body together. If the nut is not there the silver button will just push out and let the shaft turn.

 

If you no longer have the nut, you could put a hose clamp on the nose of the tool to hold it together, or order a new nut from your local hobby shop or direct from Dremel.

Posted

If you set it up like it is pictured in post 3, push the button and lift the end of the wrench---counter-clockwise when looking from the bit end of the tool.

Posted

Ok , found a small hose clamp, using the vise grip, looking at the bit end, and turned the wrench counter clockwise. As the wrench turns I can feel the shaft turning I think against the ball bearing lock. but not loosening. It feels like it is jumping the ball bearing lock.

Posted

Try locking your bit in a bench vise and then turning the collet,if its tightened that hard it might just hold enough to allow you to break the nut loose.

Posted

OK, that last suggestion using the bench vise, in combination with all the other suggestion freed it loose. I had to really crank on the bench vise a few times, the only casuality was that the bit broke, but they are cheap.

 

This a a great example of team work.

 

Thanks everyone...

Posted

When you put the new bit in, you do not have to crank on that nut, just snug it good. That is why the wrench that comes with the tool is only about 2.5 inches long and stamped out of sheet metal. The wimpy wrench makes it hard to over tighten.

Posted

I believe you said in one of your posts the bit had not been removed in quite some time or even ever. It might be a good idea to put a very light coat of oil on the collet the next bit you use

Posted
I believe you said in one of your posts the bit had not been removed in quite some time or even ever. It might be a good idea to put a very light coat of oil on the collet the next bit you use

 

And store the tool with the collett loosened and the bit removed (I know..hindsight).

Posted

Another trick for collet type tool holding systems is to never tighten the collet with the tool shaft all the way to the bottom, always leave a small gap between the end of the shaft and the bottom of the hole. That way if the tool is stuck when you want to remove it, you can tap down on the tool to free it from the collet's grip.

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