40mm fanholder for coolend E3D J-HEAD

thingiverse

Searched for a compact fanholder for my E3D hotend but couldn't find one that fit in the orcabot where x-carriage parts come together. Had to sacrifice a few millimeters on the x-axis due to the width of the holder, which is just less than the clamps holding the glass plate. No clogging required and can print with an actively cooled hotend, much cheaper than the original with that ceramic thermal separator. Printed the fanholder in abs using 0.4 mm nozzle, 0.2 mm layer height, and 0.4 wall thickness. Fearing it would melt while cooling the cool side, but happily no melting occurred during hours of printing and it stayed tight where I put it. The openscad file includes a 40 mm version that renders fine, though some shortcuts in the code make it less modular for use with a 30 mm fan. It won't calculate correctly. You may need to adjust tolerances if using different settings or nozzle sizes. I haven't tested other parameters yet. If you're not mistaken, the heat sink of my E3D hotend is 25 mm in diameter. You can change that in the scad file if needed. Hope this helps someone with their project.