3 STYLES So make sure you are downloading and printing what you want.
-1 with a vent system for a blower.
-1 with vent system mirrored
1st style is the Promega direct walle replacement for a bondtech extruder. It comes in 2 parts. The part that replaces the walle and the part that mounts to the walle replacement. I added slots for nuts if you want additional holding power rather than relying on the screw holding to plastic. I only gave a .2 tolerance so you may have to press the nuts in with a vice or a pair of pliers.
2nd style allows for a 40mm blower on the back and adds ducting and a vent for nozzle cooling.
You will need to change your Y dimensions in order to use this mod.
This is untested by me but requested by others.
Ok, good luck, have fun and leave a comment.