ROBO3D Frame Mods and Z Axis Support

thingiverse

I've had 40mm cut out of the upper frame to give clearance for cooling fans and similar items. Cutting this out has made the whole printer look better, with additional benefits. The LED lights I got from eBay have significantly improved visibility beyond what I anticipated. The laser-cut Z-axis supports required M3 holes drilling and tapping, along with some hole-drilling in the case to suit. Once everything was installed, I tightened the screws in opposing slots and then secured the Z-axis rails solidly in place. When replacing the undersize 8mm rods, I made them longer to accommodate any future modifications. I placed a 6mm ball bearing in each of the Z-axis flexible couplings to prevent them acting like springs, which would have put the whole printer's accuracy at risk. Another modification was to machine a solid adapter for the coupling to fit the screwed rod since it looked like some sort of tape (PTFE) had been used originally.