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post #1 of 6 (permalink) Old 04-21-2011, 10:34 PM Thread Starter
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Default Climb cut

Hi members. As a beginner in routing it seems that I am having to develop a new vocabulary. I am finding words used in routing that seem to mean something different in everyday life. I hope you will bear with me if I ask over time, about some words commonplace to you but a mystery to me. In simple language what is a climb cut. Oldrusty
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post #2 of 6 (permalink) Old 04-21-2011, 10:46 PM
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Practically: A cut wherex the work, unclamped, may shoot away from you & against the nearest wall. The router is fed in the natural direction of the cutter.
Clean cuts but some loss of control to be expected and, perhaps, injury. A much more severe reaction occurs on the router table.
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post #3 of 6 (permalink) Old 04-21-2011, 10:50 PM
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Hi oldrusty

That's when the bit wants to Climb over the stock the norm..in short you running the stock the wrong way by the bit.. But it has a plus side also ,that's when you want a nice clean cut like on plywood.., the lumber will be pushed back into the slot keeping the rip down to a min..but not to be use by the novice router user the norm.....

Just a note ..it's just about always safe to do it with a hand router because you have the mass of the router doing the work for you but the bit will want to push the bit back from the stock the norm..

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Hi members. As a beginner in routing it seems that I am having to develop a new vocabulary. I am finding words used in routing that seem to mean something different in everyday life. I hope you will bear with me if I ask over time, about some words commonplace to you but a mystery to me. In simple language what is a climb cut. Oldrusty



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Last edited by bobj3; 04-21-2011 at 11:02 PM.
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post #4 of 6 (permalink) Old 04-21-2011, 11:47 PM
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Hi:

The attached PDF shows the basic difference, in forces, between the normal cut and the climb cut.

In the normal cut, the router bit is drawn into workpiece by the force developed by the cutting edges on the workpiece. On the router table (as shown), the workpiece is drawn towards the fence. Also, the cutter applies a force on the workpiece in the opposite direction than the feed direction.

In the climb cut, the router bit tries to "climb" out of the workpiece. On the router table, the workpiece is being forced away from the fence. Also, the cutter applies a force in the direction of the feed direction.

This is what creates the danger for the climb cut. The bit moves the bit in the direction of the feed direction -- usually this means the worker has little control over the feed speed. At the same time, the router bit is trying to stay on the edge of the workpiece, thereby setting the situation where the cutting edges basically kick the workpiece along in the feed direction -- and out of the worker's control.

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post #5 of 6 (permalink) Old 04-22-2011, 12:29 PM Thread Starter
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Hi members. Thanks for the info on climb cuts. I can see how dangerous it could be. Oldrusty
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post #6 of 6 (permalink) Old 04-22-2011, 03:56 PM
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HI

It's very safe if you use the right equipment on your router table.
The Board Buddies only let the stock go one way so to no danger of the stock taking off like a rocket..
Just a note,,, you can also add a power feed motor to your router table that works the same way but it's not cheap also from Grizzly.
4 members will jump in and tell you it can't be done but I will tell you it can be and I do it from time to time.

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G2372 Board Buddies® For Radial-Arm Saws - Orange

http://www.grizzly.com/products/Baby-Power-Feeder/G4173
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Originally Posted by oldrusty View Post
Hi members. Thanks for the info on climb cuts. I can see how dangerous it could be. Oldrusty



"It's fine to disagree with other members as long as you respect their opinions"

Marc Sommerfeld Tools ,Videos
http://www.youtube.com/channel/UCT-n...RWaEpMA/videos

Find all threads started by bobj3
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Last edited by bobj3; 04-22-2011 at 08:32 PM.
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