it worked! 3 in 1 3d printer cnc machine

the idea was to make a strong ang precise cartesian machine that can accept various toolhead, for 3d printing, cnc, laser, plotter, 3d printing paste and other thing that arduino mega can handle.
so far it was successful, it print high quality parts and mill precise pcb board , engrave hardwood flawlessly.
tool changing is strait forward and toke about 30 seconds.
thanks to marlin developer
thanks to repetier host team
thanks to you guys here