Dual 5015 + 40x20 fan shroud for Longer LK1 / Alfawise U20 U30

Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:4743420.

I really liked CyfroN's fan housing. I love how it's a single part that is easily and quickly attached/removed from the gantry plate without having to disassemble anything (unlike most other big fan mods). But I felt it could use some minor improvements.

I added a cable/PTFE clip to the top, and a ABL mount to the right side. I notched the top left part of the 40mm fan housing to make it easier to reach the top gantry plate screw. I removed some material at the bottom right of the 40mm fan housing to leave more room for the hotend wires. The front 5015 fan mounts were super wobbly, so I added some reinforcements. And finally I just went around and leveled/trimmed/filled various parts of the model to make it as simple/quick to print as possible.

The cable clip screws on with a 10mm (or longer) M3 bolt. The ABL mount requires a 6mm M3 bolt. The included ABL bracket is for the PL-08N inductive sensor, but it should be trivial to adapt it for a bltouch or any other ABL device.

Print parts as provided. Main unit and cable clip require supports. After fiddling with tree support settings in cura for ages, I gave up and just did normal grid supports placed "everywhere". This method does require you spend 10 minutes or so picking bits of support out of the blower ducts with some needle nose pliers, but otherwise it works flawlessly.