The manual for G33 spindle synchronized motion [1] reads, "It is an 
error if [...] The requested linear motion exceeds machine velocity 
limits due to the spindle speed."

It seems that doing that actually doesn't cause an error, as 
demonstrated by the regression test in the top commit here [2]. 
Instead, the G33 command is happily executed with the axis velocity 
limited to its `MAX_VELOCITY` from the INI file, thus cutting threads 
with smaller pitch than specified in the K flag.

Is this something that should be fixed, or am I reading the 
documentation wrong?

[1]: http://linuxcnc.org/docs/html/gcode/g-code.html#gcode:g33-tech-info
[2]: 
https://github.com/zultron/machinekit/tree/spindlesync-exceeds-maxvel-lcnc

Thanks-

        John

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