K800 J-head retainer for suspended fun duct

thingiverse

I encountered an issue due to a faulty duct height - the Fun Duct was set 5mm too high. In order to properly cool prints, I had to modify the heater setup. Additionally, I couldn't calibrate the printer's alignment so that it wouldn't come into contact with the towers at its closest points of coordinates (for example X0 Y90 touching a tower and causing the effector to slide away from its magnetic mounts). By adjusting the Fun Duct downward by 5mm, there is now ample space to securely screw in place without interference from the print bed.