This is an improved version of an X axis removable print head I have made for my Orcabot 040 (old solid workhorse made by Mendel Parts).

UPDATE 2020: I have modded the top to allow for the brass nylon sleeve retainers (I forget their name) printed out, allows you to screw the brass thread into the printed top, which gives extra hold as it is recessed. Added to files.

NOTE: It is a work in progress and the files (.stl) included are improved versions of the photos/design screen shots.

WHY:
I wanted to be able to swap entire print heads between PLA and ABS and revive my old printer to operational status.
I had a look around and saw a few ideas, but none that would bolt on, so I made my own version with a large locking lever for the swappable print head retaining platform.

Designed to give room for a bed level sensor under the main assembly and house a small PCB (with connector) to interface/connect between the different print heads.

This release has better zip-tie access holes and design improvements to the first print along with a few other tweaks noticed in the print. I have increased the stepper motor mount x width after having an integrity issue after clearing the support material out of the last print from this area (the difference is seen in the exploded view of all parts and the individual TOPSIDE .stl file).

Future improvements will be to add a print cooling fan on the underside piece, below the release lever.

Objective was to keep the design minimal in width to maintain as much x travel as possible, but retain strength on the platform.

I recommend and use this design for the idler:
https://www.thingiverse.com/thing:2422237