Rear mounted diii cooler with a controller board mount and a tl smoother mount. I like having my front view unobstructed. I wanted a single part without bolting things together. Test print errors have been fixed, the thing fits like a dream. You only need two screws to mount the cooler into the aluminum lower bearing. I did have to use slightly longer screws. Having only one object screwed in allows for easier removal and less play vs having several pieces screwed in on top of each other. The control board can use it's original screws (I used a knife to round off the inside of the screw holes first for easier install) and the TL Smoother board can be mounted with its standard m3 screws. I printed this with supports to the print plate, but if you want to save plastic you can judge what needs support and what doesnt.
https://www.thingiverse.com/thing:2879915 Also check out my screw-less extended tool holder for the i3 variants.
https://www.thingiverse.com/thing:1025471 original diiicooler