this set of designs replaces the X carriage (extruder carriage) and the Z-axis ends with bearingless parts, it also gives a "quick change" ability for extruder types.
The z-axis parts are designed to be used in conjunction with a z-axis wobble fix
The belts are attached to the carriage by inserting the ends into the slot and clamping them in place with two 3mm bolts (see picture)
The various extruder mount options are fixed to the carriage by sliding them on and securing with 3mm bolts top & bottom (see picture)
I also include the "wobble fix" design but its worth note that this was designed for a 3-bolt brass lead screw nut so may not be applicable to your own hardware, however other 4-bolt and i3 wobble fix's can be used just as easily
A addition extruder type (non e3d long range bowden) design is currently being finalised but I will not publish it till its undergone thorough testing, after which it'll become available on this thingie with a list of any additional hardware requirements.
long range non-e3d bowden mount added
""this mount requires a single alu mounting block and will work with mk7/8/10 heating blocks and throats**
PolTur XL & Geeetech pro-b
designs should be printed in the orientation there published in on this thingie, this is to maximise the accuracy of the bearingless parts and reduce post print fettling.