Router bit keeps rising - Router Forums
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post #1 of 14 (permalink) Old 03-31-2012, 03:20 PM Thread Starter
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Default Router bit keeps rising

why does my router bit keep rising when I make a straight on my table?
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post #2 of 14 (permalink) Old 03-31-2012, 07:33 PM
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Quote:
Originally Posted by foothills View Post
why does my router bit keep rising when I make a straight on my table?
Hi Sal - Welcome to the forum
Just a tad bit more information would be helpful... router brand, bit configuration, shank size, type of wood, bit brand, general condition of everything..

John Schaben

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post #3 of 14 (permalink) Old 03-31-2012, 08:27 PM
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Spiral bit?
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post #4 of 14 (permalink) Old 03-31-2012, 09:12 PM
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Welcome to the router forum.

Thank you for joining us, Sal.

James
Sydney, Australia
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I don't profess to know everything, and I may learn something new.

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post #5 of 14 (permalink) Old 03-31-2012, 09:15 PM
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When you dropped the bit into the router, did you raise it up about 1/8" so that it is not resting metal-on-metal fully seated into the collet? Sometimes, if the bit is fully seated to the bottom of the collet, the collet can't be tightened as much as it should, allowing the bit to rise during the cut.
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post #6 of 14 (permalink) Old 04-01-2012, 12:21 PM Thread Starter
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It's a Ryobi router and table, brand new, 1/4" collet, bit is a straight cut 3/4" x 1" deep and I'm cutting down the of 18" redwood 4" x 4".
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post #7 of 14 (permalink) Old 04-01-2012, 12:22 PM Thread Starter
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Yes I did
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post #8 of 14 (permalink) Old 04-01-2012, 12:24 PM Thread Starter
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My pleasure, I hope to learn a lot here.
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post #9 of 14 (permalink) Old 04-01-2012, 12:32 PM
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Quote:
Originally Posted by foothills View Post
It's a Ryobi router and table, brand new, 1/4" collet, bit is a straight cut 3/4" x 1" deep and I'm cutting down the of 18" redwood 4" x 4".
Will try to make a couple of guesses here. First, are you trying to do a full one inch deep 3/4" wide cut??? That is waaay to much for a small router and 1/4" shank bit to handle without some kind of issue. 1/4" depth of cut for that setup should be absolute maximum, some would say you're pushing it at that.
Second, Frank had a good point about the bit being seated to deeply in the collet. You want it well into the collet but not bottomed out. Dropping it in and then pulling it back up about 1/8" is a fairly good rule of thumb.
Third, the obvious, are you sure it was tight?
Keep us posted

John Schaben

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post #10 of 14 (permalink) Old 04-01-2012, 01:07 PM
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The same thing happened to me, but the bit was in an 1/4" adapter. A 1/4 collet fixed it. But, you say you are using a 1/4" collet already. I can only suggest getting it as tight as you can. and, maybe, roughing up the shank with some sand paper.

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Please edit your profile with a name and location so we can better assist you and make for a friendlier forum.
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