I had a situation where I getting alot of tear out while routing a profile on the
edge of a table. The only thing I could at the time is climb cut which worked but
boy with alot of burn marks!!! . Now how do I remove the burn marks???
This issue by Chris Gochnour talks about climb cutting but he does not mention
anything about burning the wood! Did I miss something?
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Other Possible Reasons
Maybe climb cutting in itself is not a reason for burning. I noticed that I was going much slower when I start using climb cutting. Once I got comfortable with it, burning is no more an issue than with regular cutting. Check whether the bit is dull or pitched. Clean it as you would/should your saw blades.
Best wishes,
Metod
It probably has to do with how fast, or rather how slow you were moving the cutter. Climb cutting can be tricky and dangerous if you are holding either the router or the work because the cutter can grab the wood and rip the tool or work out of your hand. Light cuts are the rule of the day.
As to the burning, you will probably have to sand out the burn marks or take a little more off with the router. If you choose to do that, practice on a pice of scrap to find a feed rate that prevents burning. Light cuts will allow a higher feed rate. Also make sure the cutter is sharp.
What was the species of wood? Some species like cherry and maple burn very easily because of the sugars in the wood.
When climb cutting, I do the cutting in two to three steps. The final pass is not climb cutting but only taking off a very small amount of wood. That, and moving slowly, will generally eliminate or greatly minimize burninng.
Finally, I will use the same cutter a hand scraper. Just be sure to wear a good leather glove or you can get cut.
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