I've been thinking a lot about the carriage for my printer and came across

I’ve been thinking a lot about the carriage for my printer and came across this modular design. There’s already a couple of attachments for an e3d hotend and a flexdrive direct drive.

What do people think?
https://youmagine.com/designs/ulitimaker-orig-modular-printhead-merlin-ubis

I’m currently using the merlin hotend on my prusa i3 and love it despite its fairly major flaws. In any case, whenever I build a eustathios, that’s probably the carriage I’ll look into considering that I have and really like the hexagon and merlin hotends. Thanks for the find!

Nice! I had been thinking of something similar to RichRap’s design (the whole extruder gets swapped out), but this is cool, too. However, it lacks fan mounts–both for the cold end (to prevent jams) and for the hot end (part cooling for printing with PLA).