In this section you will see:
Reinforcing cross brace for the printer frame
Double Z-axis with two motors - method of design
Magnetic anti- wobble nuts on the trapezoid guide screw

These modifications lead to improved print quality on the old Ender 3 PRO printer. Mainly it is an increase in accuracy and repeatability of print quality, less need for frequent service interventions but also elimination of the problem of striping on the surface of the prints due to wobbling of the trapezoid screw on the Z-axis.

At the end of the video series on the modification of this simple printer, there will also be a demonstration of surface stability at both 0.32 mm and 0.16 mm layer heights.

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All the models used to modify the printer in this part of the video can be purchased at this link: https://cults3d.com/en/3d-model/tool/...