Igus bearing hole size is 15.2mm after shrinkage it fits 15mm Igus bearing. There is a 1mm gap for clamping pressure applied which is needed for Igus bearings to work properly other wise you will have small amount of wiggle from the bearing on the 8mm smooth rod. Also allows for space on the drive belt side by having a low profile side.
Print using ABS or PETG so there is no deforming if you decide to enclose your printer at a later date. PLA can be used and will work perfectly fine.
Use M4 bolt and nuts (hole size 4.2mm)
Diagram shown for the standard LM8UU block that the design is based off.
The double Igus bearing block has a 50mm gap to centers (outside holes). This design fits my Anet A8 and also E3D printed hotend.
Designed in Google Sketchup design files included. Please give credit when remixing my files or design.
ABL design to fit this setup
Print with the block standing on its end (will need a 90 rotation). Support is not required to print in this orientation, the only part that has overhang is the M4 bolt holes and nut capture hole (i printed with support set to 72 so the holes were perfect).
Use small strip of masking tape to get a better grip on the bearing so they do not slide out no need to over tighten.
Designed to fit any standard Pursa i3 design.
I am using with this design:
M4 bolts and nuts work well together with this design.