Direct drive mk8 print cooler that works with most types.

thingiverse

Human: Keep in mind that this is an early draft, and a revised, more streamlined version will follow, which won't limit print area as much as this one does. I've uploaded it now so a fellow reprapper can have access to it before the refined version is complete. Don't Forget !!!!!!!!!!!!!!!! Ensure the nozzle lifts up several mm before auto-homing or you may damage your bed's leveling screw. This will prevent the y-axis from homing due to the attachment obstruction. No worries when it starts – the nozzle normally rises a bit before initiation. Assemble... First, attach the two central pieces, securing them with a part designed for fan mounting. Use 45-50 mm long m3 screws to connect the shield to the partially assembled section; this also locks the middle parts firmly together. Secure it all with two m3 screws approximately 35mm in length on the extruder's bottom screws. These have some extra length compared to the original ones, which is a good thing – you may need to insert small washers or nuts between the motor and attachment in case of motors with slightly beveled screw areas. Ensure the level's height matches the nozzle's before tightening any screws; a couple of mm above should do it. Finally, secure the 40mm fan. That's it!