Hi Boyan. Inspiring. After reading this thread I had to join the forum, just to say how cool your machine is and how impressed with your work I am. Thanks so much for sharing. I am partway through building a beast-sh 1.2 x 2.4m steel and epoxy machine, which I plan to run with similar Samsung servos to you. I am just debating whether to spin the 2 long ballscrews or their ball nuts to eliminate the potential problem of whipping.
Like you I am aiming at snappy ;)
Anyway, I wonder if you would be able to share some of the details of how you designed / constructed that area where the servos, belt drive the ballnuts and attach to the gantry ends?
Thanks again for your inspiring work!