Edit: The moment I sent this post a package with the Noctua 40x20 fan arrived, so I might test that one today!
First small update:
I got some parts, so I started working. While the PSU fan arrived, I didn’t installed it because the PSU -->CASE<-- fan is the main problem, like @Franky mentioned in his topic (FYI: Snapmaker 2 & Enclosure Fan Information plus alternatives).
In my opinion the mentioned 35x10 fan is still to small and loud, so I ordered an Noctua 40x20 fan (12V, so needs some tinkering), which will provide a lot more air flow while emmiting less noise than any other alternative, but I will test them both.
Another problem is the measurment itself. I don’t own professional equipment, I made all measurments with the app sound meter from abc apps on a fairphone 3. I meassured noise by placing the phone in 30cm distance to the noise source and meassured vibration by placing the phone on the vibrating surface. So my data is more relative than real and my recommendations are based on personal impressions. Everyone fell free to provide better data!
First recommendation for everyone:
Try to use another slicer and accelerate your printer! This sounds trivial, but like many others mentioned the Luban slicer is not really good and the linear moduls emit a lot more noise when they are running slow. There are a lot of good topics about alternative slicers and configuration. Look at these topics for example:
https://forum.snapmaker.com/t/snapmaker-pla-test-results/11884/31
A HUGE recommendation for everyone owning an enclosure:
Use acoustic foam inside your enclosure! I had some 3cm acoustic foam laying arround from an enclosure project for my late Anet A8, but it didn’t fit my selfmade enclosure. I used doublesided tape to fix it, but there might be better solutions. Cutting it in the right angle even allows to open the doors far enough to get to the ports.
You could use the foam plates that came as packaging with your printer, but that will just sound insulate while the acoustic foam “swallows” sound.
As you can see in the pictures I didn’t had enough foam for the front door, but that might not be necessary and still allows to look inside.
My data so far:
Noise without any improvements:
- Outside (during print): 38 dB
- Inside enclosure (during print): 50-60 dB
- PSU: 42 dB
- PSU case fan outlet: 72 dB
- Vibration: 32 dB
Noise after using acoustic foam (no print, just “basline”):
- Outside: 29 dB
-
- with enclosure fan running: 34 dB
- Inside enclosure: 34 dB
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- with enclosure fan running: 45 dB
The data is extremly flawed due to my insufficent hardware! Do not use these values for direct comparison with your printer!