Tripple z-axis mod Ender 6

Description

triple z-axis modification Ender 6 (1)to make room for belt drive i lowerd the z -axis motor 17 mm with nema 17 adapter (2)extended the feet printer by 17 mm (3)bed adjusting wheels moved to space between bed and bed frame use ring/wielplaat and opvul bed level (4)bed springs shortened 1/2 length/adjust afterwards the z stop end switch (5)usb cable mounted on mother board (6) 20x20 bridge l=440 mm to bed frame m5 tapping (7) for suspension bearing support tr8 spindles upper l=404 2x/ lower l=220 2x fence connectors 4x fence connector 2 4x (8) support bottom/top image and mirror image (9)tr8 suspension to bridge image and mirror image (10) loop v belt l=1350 mm pulleys and tr8 spindles (450mm) mounted and aligned (11) tensioner on v belt stl follows if i recieve belt (12)block springs under bed frame why spring under bed? some time after finishing print, the bed drops by itself beyond the max z height of 400mm when starting the following command this gives a problem for the z axis stepper motor spring prevents it from dropping too far down m5x20/m5 t nuts/tr8 leadsrews l=450 pitch2 4 starts with lead srew/bearing 608 RS 4x/ nearly done only waiting fore belt to arrive