Speedsand Feeds red oak

[Kimon]

I am trying to carve some red oak with a 3d model and am getting some burning. Should I slow down the speed or the feed or both? I am using a 1/2 inch ball nose for roughing.

[js11110]

In my experience, if the cutter is burning the RPM's are too fast for your feed. So either slow DOWN the RPM's or UP the feedrate.


Jason

[Kimon]

Thanks I will give it a shot

[js11110]

Let me know if it works. Thats just my general rule, and not anything set in stone.


Jason

[CRFultz]

I am trying to carve some red oak with a 3d model and am getting some burning. Should I slow down the speed or the feed or both? I am using a 1/2 inch ball nose for roughing.

Kimon I've never cut but a small amount of red oak but I did get some burning in maple.
I ran another pass at mach speed at a depth just enough to get some chips and it cleaned it right up with no burning.

So, like Jason said, faster feeds should clear it up.

[Kimon]

I increased the speed of the router to 21,000 and still had burning. On close examination of the bit (cheap lowes core box) I found it to be the problem. I changed over to my finishing bit and it cut clean as a wistle.

Thanks for your help.

[Thkoutsidthebox]

I think you should have increased the 'FEED' not the 'SPEED OF THE ROUTER'. The more router speed (rpm), then the greater the heat generated due to friction and the more chance of burning. Slowing(Decreasing, not Increasing) the router speed (rpm) will decrease heat.
The faster the 'Feed Rate', then the shorter time the bit is touching one place to generate heat, and the less heat, and hence less burning.