Since I have to share my small flat with 2 Snapmaker Mk1 and an Ultimaker 3 my dearest friend, my SM1 Limited Edition 150/200, was chosen to share my bedroom with me.
But my little machine kept me awake at night because of its horrible noises.
This admired me to make my friend as quiet as possible with less money possible.
I achieved a really very quiet setup t the cost of about 5-10 € (1 fan, some screws and some filament). Sorry for the pictures. I will add some more later.
At first, I took care about the part cooling fan that can’t be turned off.
This was the cheapest and most effective improvement!
The investment was scaled down to one machine € 0,30 for 10 pcs. O-rings (round sealing) with an inner diameter of 3 mm and a width of 1,5 mm.
Put them as washers on both sides of the down facing fan. The original screws can be used but they are very short so be very careful not to ruin the tread.
The remaining 2 rings you should insert between the bent sheet metal the fan rests on, and the case of the printing module.
So the fan doesn’t make the whole machine vibrate and so the noise is reduced very much.
The second project were the machine feet.
The rubber is so hard and the small area the feet covers the machine will shake the table it is resting on producing loud noises again.
In fact I just put some rubber matt below the original feet but fitted in some own designed and printed parts. These new feet were designed to fit inside the original case and have space vor 2 layers of 4 mm thick shock absorbing rubber for working tables.
So now the vibrations of the machine are not as much transferred to the surface below.
In the last step I designed a new controller case. The fan on the original controller is unnecessary small and therefore much too loud.
The new case can hold 2 different sizes of fans and I started with the smaller one (same size as the one inside the hot end). This size is quiet enough.
This new case can’t be printed on the SM1 that’s the only downside.
You can download the STL files here: https://www.thingiverse.com/thing:4042685
You want to know how quiet the little SM1 is now? The problem is that I can’t tell you if my computer or my printer is louder…
But I’ve measured 38 dB in 1 m distance. I think this IS quiet