D-Bot linear guide for Z axis

Hi!Did my revision D-Bot .Added 2 guide shaft 12 mm length 600 mm on the Z axis, in order to avoid "rocking" of the table.For this You will need 2 12 mm shaft length 600 mm, 2 linear bearing LM12LUU (I used a length of 57 mm) bolts M5*25mm M5 nut, and print parts on a 3D printer.Printed PLA plastic with 50% fill.Plastic parts designed for profile 2020.