Router bit rising up - Router Forums
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post #1 of 39 (permalink) Old 07-30-2018, 01:55 AM Thread Starter
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Default Router bit rising up

Wondering if any one can tell me why this would occur?

Using a Triton TRA001 table mounted and a muscle chuck. Passing a piece a 350mm length of US Maple along the fence to create a 4mm deep groove. What starts as 4 mm progresses to nearly 7.

Tried to remove the collet with the idea of cleaning it but can't budge it so used a piece of foil as a shim to get a tighter fit between the bit and the collet. This seemed to work but is a temporary fix to my mind and thoughts?
Is there a technique to removing the collet?

Thanks in anticipation.......

Cheers, Kerry

Kerry

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post #2 of 39 (permalink) Old 07-30-2018, 07:01 AM
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Kerry,

I haven't had that problem but I suspect that a liquid wrench solution soaking for a while and some gentle back/forth motion may well convenience that collet to let go. I wouldn't try any brute force but give it some time to work in.
Good luck
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post #3 of 39 (permalink) Old 07-30-2018, 07:03 AM
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did you put a MM dia in an imperial measure collet or vise versa???
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post #4 of 39 (permalink) Old 07-30-2018, 07:08 AM
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Quote:
Originally Posted by Stick486 View Post
did you put a MM dia in an imperial measure collet or vise versa???
That is what it sounds like. You shouldn't be able to shim it with anything. I guess the Muscle Chuck could be bad.
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Measure once cut twice and it's still to short.

Last edited by hawkeye10; 07-30-2018 at 07:13 AM.
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post #5 of 39 (permalink) Old 07-30-2018, 07:10 AM
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and the shimming jammed the collet...
sounds like a brute force fix w/ collateral damage...

This would have been the week that I'd have finished chewing thru the restraints...
If only new layers hadn't been added....

Stick....
Forget the primal scream, just ROAR!!!
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post #6 of 39 (permalink) Old 07-30-2018, 10:59 AM
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The MC is supposed to grip with about 4x the force of a standard collet so it should have held unless as suggested the shaft was undersize. 12mm is close to 1/2 so is a possibility. I also got a (cheap) bit once that was oversize. I couldn't get it into a 1/4" collet. Something went wrong at the factory on that one. I bought some bits off Onsrud a couple of years ago that were slightly off size on the cutting end (shanks were fine) and most had an E on the end of the model number (E for error?) so not all are what they are supposed to be.

If you can't get the bit out them I'm thinking that you bent the MC slot together and you need to remove the set screw and take a very thin bladed screwdriver and try and open the side apart where the screw goes. Then check to see if a bit that has always worked will fit in. If not then you've squashed it together.
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post #7 of 39 (permalink) Old 07-30-2018, 11:11 AM
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I read that as the chuck isnt seized, he just wants a way to stop using foil as a shim.

Where did you get the bit from? mainland europe uses 12 mm cutters. UK and america uses 12.5mm (1.2")
use a calibrated tool to measure the shank. If its 12 mm dead, bin it. or youll just make the same mistake again next year.
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post #8 of 39 (permalink) Old 07-30-2018, 11:31 AM
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Run the router fully up so the shaft is locked before you do much of anything. Foil is pretty soft, I'd concentrate on the fixes offered before relying on a shim. If the bit has always worked fine, then something else has happened, perhaps the height lock isn't fully tightened? The Triton is a pretty powerful machine and the resistence of the wood and a slightly loose height lock could result in creeping. I'd be very hesitant to spread the muscle chuck before doing all the other suggested checks.

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post #9 of 39 (permalink) Old 07-30-2018, 02:18 PM
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I would take this directly to John Derosa at MC, [email protected]
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post #10 of 39 (permalink) Old 07-31-2018, 05:38 AM Thread Starter
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Thanks everyone appreciate the suggestions.

Cheers, Kerry

Kerry

Anybody can become a woodworker, but only a Craftsmen can hide his mistakes!
-Walter Blodget


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