Summary: Desktop bladeless fan, Version 2! Uses a custom designed impeller to move the air instead of a normal fan. Airflow is much higher on this Version 2. Things you'll need: Filament; RS-380 motor; (Don't use this motor higher than 8000 RPM!) http://www.ebay.com/itm/For-MABUCHI-RS-380SH-20150-DC12-24V-10000-21000RPM-High-Speed-- - Carbon-Brush-Motor-/121992439564 PWM speed controller; http://www.ebay.co.uk/itm/12V-36V-Pulse-Width-PWM-DC-Motor-Speed-Controller-Regulator-Switch-12V-24V-3A-/191784615003 3x 624 Bearing; http://www.ebay.co.uk/itm/10-PCS-Miniature-Rubber-Sealed-Metal-Shielded-Metric-Radial-Ball-Bearing-Model-/400458020258 4x ISO4762 or ISO4014 M4 x 10 bolt; 4x M4 nut Optional Things: A metal shaft, see in pictures. (A normal 3D-printed shaft will work fine but a metal, turned shaft reduces vibration and noise.) Dust filter or fine mesh so the impeller doesn't clog up over time. Rubber feet Assembly Instructions: Download the Assembly manual here: see below. Updates: 20-3-2017: Updated eBay RS-380 motor link. (eBay seller changed link) 19-7-2016: Updated the 'ShaftCoupling' and added 'Impeller-Cap'. 23-7-2016: Uploaded Assembly manual.