Thanks, I might need this version. I've got a Geeetech i3 pro B. I'm just printing the 21mm that is not WIDER, only just saw this, might as well let it finish, from what I can see using my calipers it may fit might as well let it finish and print the wide one if it doesn't fit.
Many thanks for this design. the pressed steel parts on my geeetech are very bendy, carriage and X mounts. theses should be a great improvement.