Have a Shapeoko pro-
Cutting 1” oak cutting board work a 1/4 end mill.
I just replaced the router motor brand new today.
Set up - running 3600 rpm’s
And the feed rate set to minus as far as I could go.
A 4 hour job- after 3 hours new motor went up in smoke?
Any help would be appreciated!
Not sure what router you got but the Makita only goes to 10,000 RPM. I used to have a Porter Cable 630 that was a fixed speed. I put a variable output on it and eventually it burned up the windings. A 3600 RPM would run very slow and the router RPM effects the cooling of the router. Spindles are likely capable of running at that low of a speed but cutting Oak would certainly challenge any router.
So is the 3600 RPM a recommended F&S from C3D. Seems very slow for such a hard wood. Maybe double check the recommended F&S for the router bit you are using. The longer the run and the harder the wood the more stress it puts on a trim router.
I opened up CC and chose the SO3 Hardwood with the #205 2 flute bit and the recommended speed was 18,000. So 3600 is almost 5 times slower than the recommended F&S for hardwood.
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The speed seems too low. Typically, 18,000rpm for a 1/4" end mill is a good speed. My router tends to stay on setting “3” for the majority of cuts in hardwood.
Mid posted I was running the router at 32000
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