Lightweight full dust cover for the z-axis lead screw. If your build chamber tends to get very hot, I recommend printing in PETG or a filament that is good at resisting deforming at higher temperatures.
Benefits:
Update 2024/03/23 - Added a new profile to help with prints lifting off or warping. Tested using PETG, this profile adds a brim to keep the parts down, and turns off the Aux fan to avoid the closer piece lifting.
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Includes the FreeCAD project used to create the design (including Loonie reference image)