@Zefirek The EleksDraw must use the Eleks Mana firmware as it has both CoreXY and Servo enabled. Grbl 1.1 is a too large with those features and homing enabled to fit the Nano memory, although it is possible if you either drop homing or the boot loader.
@Ayesha The "Nano" is where you connect the USB, it's the micro controller or processor that runs your machine. Originally these were an Arduino product but over time they have been copied and generally made worse (cheaper). The CH340g replaced the much better FTDI UART for communication and now the Eleks board has swapped the reliable Atmel ATmega328p for a Chinese clone.
You can unplug this board and replace with any other quality Nano.
It is OK to use simple streaming if you don't see any issues, it requires the computer to be fast enough otherwise for high quality engravings it's possible the laser will stutter rather than provide a nice smooth image.
@Zax Some update. I made a bigger holes in laser carriage acrylic, the one that holds the wheels. As i said it seemed to be too stiff . So after i made holes slightly bigger with a 6 mm drill bit, it started to roll more smoothly on this aluminium. So finally it worked. I have no more problems with backlash. just i need to figure it out how to use T2 soft, because now i use like 10 % of its possibilities
@dave_nh I will mention, if you ignore the errors (as a lot of software seems to do, including Eleks own) you run the risk that Grbl crashes and leaves the laser on while the motors are stopped = fire risk!
Maybe you mean how do you engrave where the machine draws around the circle instead of scanning across? If so you need a vector graphic in dxf format (or use the circle tool in T2 laser) as when you use a jpg or raster image the machine scans line by line across the circle.
I think you are correct.
Basically you are asking how to do vector (where the laser will follow the path) instead of raster (where it scans back and forth).
As @jimmyedson said, the difference is in the file. In T2Laser you can either use a vector file (DXF, PLT) or trace a raster image to generate a vector path. T2Laser Sketch feature can also generate both, with the filled option disabled you will get vector paths.
Thanks for the reply and for adding it to the "wish list". And I understand about the potential problems with the momentum in vertical cuts. And again, I really appreciate the work that you put into this excellent product.