[snip] >Thanks Chris. >Maybe we could get John or Alex to mention this behavior in the docs please. >I would think that a pause for up to speed would be very important for >constant surface feed. > > You can do this with HAL. You can compare the spindle speed to the expected speed, and activate feed hold until it gets within range. (I'm assuming that CSS/FPR/threading honor feedhold, which is another can of worms) You'd probably want to set some digital output in the G-code to allow this behavior - you may not want motion to stop every time there's a speed change.
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