Kossel part cooling fan upgrade

thingiverse

Motivation The original Anycubic Kossel parts cooling fan (40 x 10 mm) began to fail and I wanted to upgrade to a higher airflow with a 50 x 15 mm radial fan. The brand was MX, so I decided to replace the fan anyway after upgrading to a 24 V PSU. Design The original fan had a significant air-gap between the housing and the fan blades. In an attempt to increase efficiency, I designed the intake duct to allow air to smoothly enter the fan while reducing the air-gap. The mount was designed to be glued into the fan housing and attached to the effector using M2 x 5 screws. Print settings - Mount: use vase mode/ spiral outer contour in Cura while printing 20 bottom layers at a layer height of 0.1 mm. This creates a solid base with a thin-walled smooth duct. - Intake duct: rotate so that the flat side is on the bottom. Single wall thickness, 10% infill, support 'touching build-plate'. Use six bottom layers and a layer thickness of 0.1 mm. Assembly - Fit the intake duct first without glue, making sure the fan is free to rotate (it is a tight fit!) before permanently gluing it with CA glue. - Open up the fan mount on the top side (see the fourth picture). - Next, mount the fan mount to the effector. - Dry-fit the fan on the fan mount, mark the position. Then, remove the fan mount from the effector and lay it flat on the back side together with the fan, permanently gluing them together. - Solder the power wires. Happy printing!