Anycubic I3 Mega Z Brace - Arm

thingiverse

I created these z-brace components because the i3 Mega unfortunately has a very wobbly Z-axis, and the resulting vibrations are reflected in the print. For the correct assembly, you will need to prepare each side with: 50 cm threaded bar M8 4 self-locking nuts M8 (standard nuts can be used but won't move with vibrations) 4 large washers 4 orings or gaskets of equal size to the washers or similar (optional) M3 screws washers M3 The assembly is simple and intuitive, using mostly existing screws even if they need to be replaced by longer ones in some cases. For the lower parts, since there are few original screws available, you have two solutions: make a hole in the center and install a through screw with nut, or apply a small amount of silicone on the big smooth wall before screwing the screws in place. This way, if needed, you can still remove the piece without having to drill holes. Regardless, the lower pieces will hold up well because the force is developed diagonally and the piece, if printed correctly, has a vertical interlocking horte. With these precautions, it's even better. It's very important to put a washer under each M3 screw so that the force is distributed on the PLA on a larger surface than the screw itself or it will split. Finally, insert the orings between the washers and the components in PLA (PETG or ABS), for two reasons: to preserve the material even when tightening the nuts with force, and to provide a "vent" to the vibrations of the machine. UPDATE: I added two mounts to move the thrust block as it could touch the Z-brace by going up the X-axis. The Type 1 mount moves the block straight and requires four M4 screws and two M4 nuts. The Type 2 mount moves the block and allows you to put it in an inclined position, creating even less tension on the PTFE and creating a more natural angle in my opinion. Layer: 0.2 Infill: 100%