I am new to CNC Milling. Reading through the help tips in EstlCam I saw something interesting. Feedrate too slow and it will cause heat and dust. To fix it slow the RPM or increase the feedrate. I see Ryan’s idea of the RPM speed controller for the Spindle. I will most likely copy that idea. ( I also like the progress on the PID speed comtrol.) But before I do I was wondering if you could accomplish similar results with the Feedrate % multiplier built into the Marlin Firmware. Keep the Spindle at full RPM and if you need to speed things up or slow them down use the LCD to adjust the Feedrate multiplier. That will make the machine execute all GCode movement commands slightly faster/slower. I do that on my 3D printers fairly often to improve quality at certain layers.
Will that work? What other issues might that cause?
The only issue I can foresee is with vertical verses horizontal movements. In some cases you may want to speed up the horizontal movements but not the vertical (or visa Versace) and this idea can’t accommodate that
Is there a rule of thumb for milling that could help a new user? Like if you see it starting to vibrate a lot and getting choppy would you want to speed up movements or slow down?
Where can I go to learn more about Milling? YouTube channel or videos? Books etc.?