This is a revised version of the previous design and replaces previous designs. This add-on cooling fan scoop was designed primarily for use with the Pico hot end.
The OpenScad file is included so that you can customize to your own configuration.
This version mounts to your x-carriage and not directly to the hot end to keep the moving weight off of the hot end.
The SCAD file creates two different sizes of scoop; a half-height size and a full-height size.
The half-height was designed to work with my Hadron OrdBot 50mm extruder fan mount https://www.thingiverse.com/thing:589510, and the full height version is generic enough for anyone to modify and use.
No support is required as support material has been included in the STL model. Break off the supports after the print is completed.
This was successfully printed in PLA on my Hadron OrdBot. No ABS required because the fan scoop does not touch the hot end directly. A laser temperature tester was used to confirm that the Pico hot end is being cooled properly according to the instructions on their web site.
This was designed to be used in conjunction with my "OrdBot Hadron extruder 50mm fan mount" https://www.thingiverse.com/thing:589510
The source OpenScad file is included.
Adjust the variable called OUTPUT to determine which model is exported/generated. This source will generate both a Half-height version of the fan air-scoop (use with my 50mm extruder fan mount) and also a Full-height fan air-scoop.
The SCAD file also includes a model of the PICO hot end for reference to show you how this air-scoop must be installed. It was designed for 50mm fan, and the air will hit the hot end in the proper location.
Please ensure that you mount the air scoop so that the lower edge of the output is mounted above the Pico solid-heat-zone.
- print with a 20% infill at .2mm-0.4mm layer height.
- print in PLA
- no support required, support is included in the model
- remove the support pieces after the print is completed
- install the fan on the bottom bolt holes of a 50mm fan
- walls are very thin, so cool the part as you print it!
STL files for both the half-height and also full-height have been uploaded for those not wanting to edit the source SCAD file.
I have printed the half-height version and am using it on my Hadron OrdBot with great success.
I have printed the full version successfully without issue. Feel free to modify it these objects to suit your own requirements.