LDO Sunon Fan MF40100v1-1000C-G99
LDO Sunon Fan MF40100v1-1000C-G99
- 4040 Form Factor
- 7000 RPM
- 8CFM
- 27.3 dBA
- 3 pin connector
- Perfect drop in replacement for Prusa MK3 heat sync fan.
- Reviews
- Questions
- heat creep
- extruder
- Prusa MK3
- drop
- noctua
- MK3S
- plug
- Performance
- cable
- modifications
Much better then the Noctua Fan !
Perfect drop in replacement in the Prusa MK3's
Good Fan
The fan seems to be working well. I used M3x16 button head screws bought from Ace Hardware to mount the fan to my Prusa MK3 extruder.
Not a Direct Replacement
This fan does not have recessed screw holes like the original one does. So the screw heads were bumping into the lead screws. I had to drill out the recesses myself to fix it. Other than that, the fan is solid.
Perfect swap for the Prusa Mk3 heatsink fan.
Simple fan swap, plug & play.
Great fan, but it's not necessarily a drop in replacement in the Prusa MK3's
This took me a long time to figure out. Basically, the Sunon fan doesn't have the recessed notches the Noctua has that comes with the MK3. Without those notches, the fan screws are just long enough to bump into the Z-axis screw instead of being able to fully home. That's probably not normally an issue except if you need to use most of the build area. The prints will be offset slightly which means you cannot print the full width available - if you try, you'll reach the end of the X-axis and bang into the end and risk a layer shift. I managed to solve this by using some M3 screws that had a pan head though there is probably a more ideal option. I think for Printed Solid to say it's a drop in replacement, some compatible screws should be provided (I'd certainly pay a few bucks more for the convenience). In fairness, I've been using these fans for a while and I don't recall having this problem until relatively recently so I'm not sure if there was a design change between, say, the MK3 and MK3s and MK3s+ that changed this but it's definitely an issue to be mindful of. So that's the bad, the good is the fan seems to make a big difference in airflow around the heatsink. Prusa has been steadily improving on these designs so hard to say if the newer designs might be good enough to avoid needing the Sunon but once I switched, I never looked back. It's only slightly louder (and is drown out by other printing noise anyway) but definitely pushes more air. Just be aware to have some M3 screws of the proper length if you want to avoid crashing into the X-axis screw.
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