Greedy router grabs the wood - Router Forums
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post #1 of 13 (permalink) Old 06-05-2019, 09:32 AM Thread Starter
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Default Greedy router grabs the wood

I'm cutting eucalyptus in an arc for shelf ends. After cutting on the bandsaw I tried cleaning up the cut on my router table using a 12mm pattern bit and a template, feeding from right to left and making a very shallow cut. About 3-4 cm into the cut, the router grabbed the wood and I got kickback (no harm or damage). Tried starting from the other end of the piece - same result. Pictures attached. Why? What shoud I be doing differently?
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post #2 of 13 (permalink) Old 06-05-2019, 09:46 AM
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That happens to me too if i cut against the grain or partial end grain. Keep lightening up you cut till it cuts better, and try resting your work against a pin on the table top.by all means cut the same direction as the grain. If all else fails go to belt sanding.
Just a suggestion,
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post #3 of 13 (permalink) Old 06-05-2019, 10:09 AM
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Are you feeding the router in the correct direction? The blade of the bit needs to move forward toward the direction that you are moving the router. If it is moving in the same direction as you are moving the router, it will climb out of the cut and pull the router.

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post #4 of 13 (permalink) Old 06-05-2019, 10:42 AM
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listen to Herb...
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post #5 of 13 (permalink) Old 06-05-2019, 11:04 AM
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Flip the part upside down, so the grain is the opposite direction.

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post #6 of 13 (permalink) Old 06-05-2019, 11:45 AM
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Yup - looks like your cutting into the end grain and it's grabbing. Flip the piece over and cut with the grain.
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post #7 of 13 (permalink) Old 06-05-2019, 11:56 AM
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Herb nailed it. Theoretically a router should make a cleaner cut than sanding. But that's not guaranteed on end grain.
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post #8 of 13 (permalink) Old 06-05-2019, 01:01 PM
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What stick said.
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post #9 of 13 (permalink) Old 06-05-2019, 03:40 PM Thread Starter
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Thanks all for the super quick responses!
I got the answers that I expected, meaning I knew what to do, so the problem wasn't in the knowing but the doing. I thought the cuts were light enough, but maybe not. It is basically an end-grain cut. Flipping the piece to go in the other direction of the grain didn't solve the problem. Again, looks like I was doing the right thing, just not good enough. As I don't have a belt sander and didn't want to risk ruining the pieces, I finished them out by hand - file, sand paper, spokeshave. Not a lot of fun with eucalyptus, the results less than I would have liked, but passable. Hopefully next time will be better.
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post #10 of 13 (permalink) Old 06-05-2019, 05:13 PM
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A spiral bit might fare better since it’s cutting at an angle to the grain instead of a straight 90. I had the same problem recently when I was trying to use one chair arm as a template for the other. I didn’t have a bearing guided spiral to try. I wound up just sanding it to match the other since one didn’t need to be a perfect mirror image of the other. Just close enough to fool the eye.
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