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Frozen collet nut on Craftsman model 315.175040 router

I was using the abovementioned router and am unable to remove the bit to insert another one ... I found a similar question on your website, but do not see the solution displayed ...

If I remove the router from the table and position it on a workbench so that I am looking downward at the router bit, which direction to I turn the collet nut to loosen it?

I 'believe' that I should be turning the nut in a CLOCKWISE direction to loosen it, but am not sure ... I cannot find my manual ... THANKS for the help !!!

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  • donboushie Jun 03, 2009

    Thanks ... that was fast !!!

    At the risk of sounding like a complete idiot, after I heat it, do I turn it clockwise?

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It is a right-hand thread....heat it with a propane torch and that will loosen the nut

Posted on Jun 03, 2009

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Hello there. Buffalonyman is correct that heaat will loosen any nut. However, your first issue is that you are turning the nut tighter, not looser. As you look down upon the bit, the nut loosens counterclockwise. If you are using a tiny wrench, like the one that may have come with your router, you will be much happier with a real open end wrench. If you don't have a set, it is worth the small investment. enjoy. AND go to sears.com and you can download a manual.

Posted on Jun 04, 2009

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Posted on Jan 02, 2017

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1 Answer

How do you put a router bit in a Makita router model 3612BR


Inserting the bit should be the same on all versions of the Makita 3612 router. It does depend on the bit size. Press the shaft lock to keep the shaft from turning. I think the lock is close to the handle on one side of the router when you hold the router with the bit/collet up. For small shaft bits, insert the appropriate collet sleeve into the collet cone. Then insert the bit completely into the sleeve. For larger shaft bits, insert the bit completely into the cone. Use the wrench to tighten the collet nut securely. Unlock the shaft lock. Do not over-tighten or leave the bit loose in the collet cone/sleeve. Over-tightening can break the collet cone. Leaving it loose can result in the bit flying out of the collet cone. Either way, injuries can occur. To remove a bit, loosen the collet nut and then remove the bit (or bit and collet sleeve).

The manual is available on the product page: https://www.makitatools.com/products/details/3612 . The direct link to the manual is https://cdn.makitatools.com/apps/cms/doc/prod/361/df12a409-2bd0-48c3-aa38-d635a480a76e_3612_IM.pdf . See page 8.

I hope this helps.

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How do I change a router bit on a craftsman router model number 315.174700


lock the collet by turning the on-off switch to off, push the button under the on-off switch to lock the collet then use the supplied wrench to loosen the collet.

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On some models the collet stays put on purpose. You don't have to remove the nut either. But if you really do have to remove the collet and it is the type that is supposed to come out (maybe you need to use the 1/4 inch collet) then just stick a bit into it without the nut and give the bit a sideways whack with a piece of wood. If the collet has been pressed in tight by the nut without a bit in place, then you won't be able to fit a bit into it, and maybe the collet is ruined. Find the largest diameter shaft you can to fit into the hole and pop that sideways. Good luck.

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You may also make sure that the collet did not seperate from the nut. remove the nut completely and if the collet is not attached, remove the collet from the spindle, insert inthe nut and then insert the bit through the collet while holding it and then put the hole thing back on the spindle (mtor shaft) and tighten it.

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I have a brand new Ryobi router model ERT241200. Am I supposed to insert the 1/4'' collet into the cavity where the collet nut is, then insert the bit into the collet and tighten the collet nut? I thought...


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How do i change the bit on router?


On my older Sears router there is a lever on the base near the collet nut that you slide to engage the motor shaft to lock the motor shaft for bit changes. On newer models you may have a button or different mechanism to lock the shaft. After the shaft is locked you can use a small wrench to loosen the collet nut, usually by turning it counter-clockwise (viewed from the base). Once the nut is loose the bit should slide out (sometimes the bit is stuck in the collet and the nut may need to come all the way off to get them apart). Just replace the bit with a new bit with the same shaft diameter, tighten the nut, and you are set. If the new bit has a different shaft diameter than the old bit you may need to change the collet also (in general, different collets are used with different bit shaft diameters).

Oct 03, 2009 | Craftsman Tools & Hardware - Others

1 Answer

I need help on how to replace bit on router craftsman style


You didn't state the model number. The older Craftsmen routers had a red lever lock on the top of the router, one position allows the spindle to turn, the other position locks the spindle. Here's the instruction for the older style routers:

  1. Unplug the tool.
  2. To lock the spindle press the red button in and slide it to the locked position.
  3. Unlock the height adjustment knob.
  4. Raise the router motor using the height adjustment collar until you can get a wrench onto the collet nut.
  5. Loosen the nut until it turns freely.
  6. The bit may still be locked in the spindle, tap it gently (not on the blade!).
  7. The bit will come loose in the spindle and can be removed.
  8. Replace the bit, tighten the nut snug but don't use excessive force.
  9. Unlock the spindle, returning the red lever/button to the free position.
  10. Adjust the height of the bit as you wish, then lock down the motor using the locking knob.


Mar 19, 2009 | Craftsman Tools & Hardware - Others

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I am unable to get a tight fit on my router bit.


could be a couple things. First how is the shank on the bit e.g. is it worn down, second is it the right size for the collet being used (have to ask) and what is the condition of the collet and collet nut. What I would do is make sure there is nothing to prevent from completely tightening the collet nut. Also make sure if the collet locks into the nut that it is properly installed. Lastly make sure that you use the wrenches provided to tighten the assembly. If this doesn't help please provide the model number and brand and I will do some more research.

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If I understand this right you can't remove the bit from the collet. If this is true there might be dirt on the collet and you can try and blow it out with compressed air. What I would do if that doesn't help is support the collet nut allowing the bit to hang free and gently tap on the back of the bit and this will remove it. It is possible that you may have overtightened it or the bit has a burr on it. Good luck

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1 Answer

How do you fit 6mm collet cone on new produce


You have, I presume, already locked the spindle and loosened the collet nut with the wrench, have you not?
Once the nut is loose, you should be able to remove it by spinning it off the threads by hand. Then insert the 6 mm collet cone into the collet,
carefully thread the collet nut back onto the collet, and tighten it with the bit in place.
Sometimes bits are a snug fit, especially into a new collet. If you have some fin sandpaper you can gently chamfer the very end of the bit where you first insert it into the collet, and this may help to insert it. If you have to, push a bit.
I have noticed that some companies tend to mill the shafts of their bits a little too close to the exact tolerance, or even oversize them slightly, and this can cause frustration when inserting their bits. In exceptional circumstances, I have resorted to polishing a couple of small bit shafts with very fine (600 grit or so) emory cloth, just to allow the bit to enter the collet. I would not recommend this with a new router collet, unless you have checked the bit with a micrometer and it is oversize. Odds are you just need to break things in a little.
The force need not be brutish, but you may need to use some force, yes.

If I've managed to answer your question or solve a problem, please take a moment to kindly rate this post....thanks!

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