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post #1 of 4 (permalink) Old 01-31-2012, 12:56 PM Thread Starter
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Default wood burns

When cross routing routing oak (no problem going with the grain) with a carbide roman ogee bit, the grain shows burn marks. Any one have a solution??
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post #2 of 4 (permalink) Old 01-31-2012, 01:54 PM
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Try to maintain a slightly faster passing speed and DO NOT stop.....if required, take a shallower pass and go faster...does this make sense??
Have routed lots of Oak and I find that if I take a shallow enough cut and maintain a good pass speed(not fast but certainly moderately quick) then it doesnt happen. To be truthfull its a good approach to all routing.....less strain on bearings and bits, hence longer life from both router and bits.
Most beneficial though is the result... far better, cleaner cuts, less tearout. Everyones a winner.
Hope this helps.
Paul

The moving finger writes....and having writ moves on...nor all thy piety nor wit shall lure it back to rub out half a line.
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post #3 of 4 (permalink) Old 02-08-2012, 09:13 PM
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a little late here but this has helped me, I agree with everthing said so far, but would like to add this. If you don't have a varible speed router you can buy a speed reducer at Harbor frieght for about 19 bucks or so. Slowing the speed of the bit can help with burn. To get the burn off take the bit you were cutting with out of the router and use it to scrape some of the burn off.

Last edited by Hexhead; 02-09-2012 at 07:29 PM.
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post #4 of 4 (permalink) Old 02-08-2012, 09:40 PM
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Now threads like this are what this place is really all about....

Many of the wise ones around here say 'shallow cuts', 'shallow cuts' until they are blue in the face. Scorching is one of the many reasons why. The deeper the cut and longer the cutter to workpiece 'contact' (a combination of RPM & speed of the workpiece across the bit, the more heat, I'm guessing. Moving the bit faster and taking 'little bites as I do, makes for a prettier board. That being the case, I guess I do have the time to run each side across the blade four times instead of one.

Moving on from the 'physics sided', Bill's suggestion of using the same bit that I scorched it with as a 'hand tool' to 'clean up my mess' makes me want to go out and buy tap wrenches that 1/4" and 1/2" colletts!

Many thanks to richtad for asking and Paul and Bill for sharing their experience on the topic.

wbh1963 is flowing with the grain in Arlington, Washington, USA

A day without curls is like a day without sunshine!

Last edited by wbh1963; 02-08-2012 at 09:41 PM. Reason: Forgot to say Thanks----oops.
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