Anycubic i3 Mega 3 point bed levelling

Last crawled date: 4 years, 3 months ago

Inspired by the design of Gulfcoast Robotics, I made a simple three point levelling system for the i3 Mega.
For now it is just an experiment as the part is printed. Print in PETG and don't use it with bed temperatures > 70-80c. I haven't printed with this yet, so I don't know how the petg will hold up. Do not print this in PLA!.
It will be very easy to make this part in metal/ aluminum. I'll add a cad drawing for this later. It's just a strip with two M3 holes 209mm apart, and one M3 countersunk hole in the middle.
How to use:
print the part
remove the heated bed from the y carriage;
attach the printed part to the y plate (left or right side), put some screws through the outer holes. It now only serves as a drill jig;
with a small drill (2,5mm) use the center of the part to drill a hole in the y carriage;
remove the printed part, and drill out the hole with a 3,2mm drill
remove the m3 nuts and washers from left or right side of the ultrabase bed
put an m3x30mm countersunk screw in the center hole of the printed part
now attach the printed part to the ultrabase bed using the m3 nuts and washers again
don't remove the m3 screws on the corners just in case you want to revert to 4 point levelling.
put the heated bed back on the y plate, only using 3 springs and adjustment nuts.
Good luck, and let me know how it works out for you.
My other i3 Mega parts:
E3D Hemera mount: https://www.thingiverse.com/thing:4108098
LCD adapter: https://www.thingiverse.com/thing:4104206
Y belt tensioner for up to 9mm belts: https://www.thingiverse.com/thing:4127878