Geeetech Rostock 301 fan

thingiverse

My version of a cooling fan + LED ring combination for my Geeetech Rostock 301. IMPORTANT NOTE: Remove the aluminum piece between your nozzle and the cooling fan! This will clamp your hotend much better, bring your hotend a bit more down, and ensure that the cooler is always 1mm away from your workpiece at all times. Ha! And of course, you can use one of the three spare fans from the 3 extruder motors on top of your Rostock 301. June 30: I wanted to update the fan to increase airflow (see separate STL file) and discovered a major disadvantage - it limits the movement of the head. The rods bump into the top corners of the fan when moving to the two corners on your buildplate that are further away from the fan. In practice, this means no big prints with this fan. Overcome this issue by keeping bigger prints in the quadrant where your fan sits. Experiment a bit to understand what I mean. Sorry, folks! July 03: I've uploaded a sketch of where you can still print with this fan mounted and where not. I'm pretty annoyed about this discovery now that I found it out... But hey, the fan works well on all my smaller prints so far. Print Settings Printer: Geeetech Rostock 301 Rafts: No Supports: No Resolution: 0.2 Infill: - Notes: Print this thing without support. All is set up as bridges and where ever support is really needed, I've added a single line wall that you can break and cut away easily. To print it with support, you'll need to rotate the current STL files. How I Designed This... A keen observer notices a difference in the pictures already. The main reason for making a new version was that the temperature of the nozzle made the PLA deform unevenly, causing it eventually to stick slightly to the nozzle. By adding some additional ribs, this issue got solved. Still ongoing: Is this design good enough? It is designed to stay above your workpiece 1mm at all times. And the main assumption is that the plateau holding the nozzle is always parallel with the bed... but I fear that's not the case - or my printer is wrongly calibrated - in some locations, the fan is touching the bed - and hence also my workpiece. Looking forward to your feedback on that.