Router chatter with spiral bit - Router Forums
 
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post #1 of 6 (permalink) Old 07-19-2014, 02:01 PM Thread Starter
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Default Router chatter with spiral bit

Hey Everybody!

I have a Leigh 1/2" Spiral Bit (its the 180CL), so its the carbide bit that is 2 1/2" long. I've been trying to do some plunge mortises and I get insane chatter. Even as its first plunging, it chatters a lot. If I switch to my 1/2" HSS spiral bit (which is only about 1 1/2" long), then I get an easier plunge cut. I get these really bad banging around sounds and the plunge gets increasingly difficult and dangerous. Any ideas why this is happening? I bought this beautiful carbide bit and I haven't been able to use it. I've been routing with both the festool OF1400 and the Triton 1400w router. I get better results with the festool but still the same problem overall.

Thanks in advance
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post #2 of 6 (permalink) Old 07-19-2014, 07:38 PM
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If that is the only cutter which gives you the chatter, it sounds like a bad cutter.

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post #3 of 6 (permalink) Old 07-19-2014, 09:03 PM
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Are you trying to plunge full depth in one pass? Try taking out the waste in much smaller steps and work your way down to full depth.

I have found that hand tools are the best choice when I want to make mistakes at a slower rate of speed.

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post #4 of 6 (permalink) Old 07-19-2014, 09:28 PM
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set it a little bit deep into the collet...

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

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post #5 of 6 (permalink) Old 07-19-2014, 09:40 PM
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Question answered. You are taking to much wood per cut. I have big routers and good bits and I still take 3 to 5 passes depending on what I am cutting.
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post #6 of 6 (permalink) Old 07-19-2014, 11:54 PM
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I had a Colt router that could not center the bit. Took it back and the next one was the same. Exchanged that one and still couldn't get one to center the bit. Gave up on the Colt.

Put a gage on the bit and see if the bit is bad. The above fore mentioned were 12 thou out.

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