Bowden & 10mm thread rods & 10mm ground rods
Replace X/Y carriage to lm10uu with nut lock
Z rods is aluminium with PLA bushing
It cannot move because the force from belt
I add the 8mm rods and it ok.
Z-motor is cheap 1.5 $USD 28BJY-48 motor
I Just add PLA cooling fan not in the picture
print result is good