Geeetech A10M A20M - Better (angled) Fan Duct for easy printing

Geeetech A10M A20M - Better (angled) Fan Duct for easy printing

cults3d

This is just a simple replacement for the stock fan duct. It has some advantages to the mostly (not so nice) printed stock fan duct. Much more airflow due to optimized flow channels... pointing directly on the material left and right of the nozzle, but does NOT blow directly onto the nozzle. Also height of the position is optimized. Its just easy and fast to print... Just print as it comes flat on the bed without any support. On my Prusa MK3 even 0.1mm layerheight took only about 1h to print and need about 5g of filament. 0.2 took about 35 minutes. Best print in HT-PLA or at least ABS, as it is really near to the nozzle...Maybe PETG will also work, but I'm not sure and will not test it. If you have just PLA, try to print it and try to anneal the PLA in the oven by around 100°C for about 1-2 hours. After the annealing process normally the PLA can get up temperature >120°. The only disadvantage is that it will shrink between 2% and 8% depending on the material you use. So it's maybe a good idea to scale it up and hope that it will not warp in the oven. Just try and test it ... UPDATE 22.01.2019: I added an angled version, which gives more cooling to the printed object and also provides a much better air flow for hotend cooling, as it opens the front for airflow instead of caging the air in the hotend case. UPDATE 15.01.2019: I also uploaded V3.1 now which has a little bit more clearing and fits better for printers which are not already finetuned UPDATE 06.02.2019: Updated all Models and added also versions for the longer nozzle now. Improved Airflow again for all models. I recommend to use the angled version. But nevertheless even the standard striaght versions will work, but angled has more advantages also for hotend cooling.

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