Z brace for KevinAkaSam Belt Driven Ender 3/Pro/V2 and CR10 in 2 motors configuration on normal profile. It will also work with any stock Ender 3 style printer.
BOM
for dual Z on belts mod
for stock Ender
Printing Settings
Paint-on supports for the upper part. Make all parts as strong as you can. More perimeters or even 100% infill.
Use this orientation to make the parts stronger