K40 Laser Air Assist, radial fan, no screws, just clip on

prusaprinters

<p>This is a Air Assist for the well known k40 china laser. It has the following advantages over other constructions I found:</p> <ul> <li>it works with a radial fan, not with a diaphragm pump</li> <li>It is not screwed to the laser head, but can simply be clip onto the lens nut. So you can easily remove it to measure the focus distance without screwing.</li> <li>It prints without support, with an integrated break-off brim that is removed after printing.</li> <li>The radial fan is used in 3D printers and can be connected to the 5V output of the board.</li> </ul> <h3>Print instructions</h3><p>It prints without support, with an integrated break-off brim that is removed after printing. As there are overhangs and bridgings, I recommend printing with PLA, 100% cooling, detect bridging perimeters. If the printing of the upper fan mount doesn't work, decrease the temperature and also "Filament Settings/Cooling/Min print speed".<br/> The one you can see in the pictures is a prototype, printed with PETG. Should have printed it slower. But nevertheless it works.</p>