Robin's ultimaker fan duct

thingiverse

To enhance the previous version, longer attachment points were added to prevent drooping on the fan side and improve print quality. Slots for nuts were incorporated to avoid losing them during maintenance. A shovel was also included at one end for easy removal of small prints from the printing surface. This design is currently untested; feel free to modify the OpenSCAD file (included in the zip) and print with your preferred settings. Ensure nuts are inserted easily by taking advantage of the 0.1 mm clearance provided. Mount the accessory, and if desired, create custom G-code for print surface maintenance (optional). Alternatively, you can upload a version without the shovel end to reduce printer head footprint in Cura's project planner.