back to index

Kossel XL 3D printed workpiece cooling fan holder

Problem

A 3D printer workpiece sometimes needs to be cooled during printing, to avoid deformation of the layer stack. This is needed for smaller models and higher extrusion temperatures for lower-melting polymers (typically PLA).

Originally, a makeshift attachment for the E3D v6 hot end was made from steel wire and few drops of hot glue. This was judged insufficient.


Original makeshift version

Original makeshift version

Original makeshift version

Original makeshift version

Solution

A part was drawn in OpenSCAD, using a rough approximation of the hot end fan attachment. A drawing of a 40mm fan was also made, with projectings of holes and rotor, to be subtracted from the attachment template.


Rendered model

Rendered model

Rendered model

Horizontal mounting holes were made in the clamp pads. All holes were after printing drilled to 2.5mm and cut with M3 thread.

For printing, PLA at 0.4mm layer thickness was used.


Fan holder, as printed

Fan holder, as printed

Fan holder, cleaned up

Fan holder, cleaned up

Fan holder, cleaned up

The fan mount holes hold thread well.


Fan mounted on new holder

Fan mounted on new holder

Fan mounted on new holder

Holder in place

The clamp holes were intended to host screws that'd squeeze the head fan attachment. It turned out to be insufficient. A hole had to be drilled directly to the plastic part with the fan, and a M3 thread tapped in. The same was done from the other side. One screw was used in its original clamp duty, to fix the holder in the proper angle.


Mount hole drilled

Holder attached

Holder attached

Holder attached

Holder attached

Holder attached

Holder attached

Files


If you have any comments or questions about the topic, please let me know here:
Your name:
Your email:
Spambait
Leave this empty!
Only spambots enter stuff here.
Feedback: