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i already start the draws! i really liked designs like Silyavski design https://www.youtube.com/watch?v=C9hTLN1CydU (low profile and moving grantry) or fixed gantry like...

From my understanding the screws should be at 90' to each other also if you clip a little bit of copper wire off and flatten it then slip it down the grub screw hole it will grip the shaft better.
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Why would you go with 2:1 ratio on 5mm pitch screw. This will be far too slow for router.

Also to make matters worse your only running 36V which means your your steppers are under performing by...

Ok well not exactly sure what your asking here.? Are you asking if the Brain can do this or if you can do this while the brain is running.?

Brains run all the time in the background and only watch...

Don't threat I fit these all the time and think Dave had VFD which wasn't setup correctly or possibly faulty. Normally they work very well above 6000rpm.

Yes the Huanyang won't match Vector drives...

JUNK £60 wasted.!!