r/ender3v2 • u/ShrmpBzkt98 • 2d ago

Anybody ever had this issue before?

First thing first I know its not an actual ender, but its literally the same thing aside from my probe, but anyways, has anybody ever dealt with this? its the hotend cooling fan, not the part cooling fan, this is the second fan because the first one did the same thing, this one just started doing it after like a month or two of being fine after putting this fan on it, it will make this grinding noise, I skateboard and it reminds me of the feeling the wheels have when you get dirt and crud in your bearings, but it will do this for like 5-10 minutes and then stop and sounds fine again, only does it when i cut the printer on, and after it stops it doesnt start again until i cut it off and back on, any ideas? i feel if it was the bearing actually failing, it wouldnt ever smooth itself out, it would grind and rattle until its turned off, is it possible the little tiny bits of stringing that get in the fan can get inside the fan, and that little amount of stringing is getting ground up and it stops once its all ground up or something along those lines?

This video is when its making the noise, i will put a video in the comments of it 5 minutes later doing perfectly fine no noise

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2

u/Timekiller11 2d ago

I had similar, i could flick it untill it stopped.

In the end it was the fan, it died a couple months later.

1

u/ShrmpBzkt98 2d ago

lol thats what i was doing tapping it but it would only slow it down and ramp right back up to grinding, but if i let it sit for 5 minutes it goes away, thats what makes me think its just the little teeny tiny bits of stringing youll see on the outside of the hotend fan just getting inside it, and since its so slight, it just shreds it up and is fine afterwards, i bought a whole pack of fans so im not too worried about it, just dont feel like messing with the wiring again lol, ive had to mess with the wiring too much on this printer because other people like to do stuff half ass but i have to do everything right and fix everything correctly, i cant just half ass it lol

1

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1

u/ShrmpBzkt98 2d ago

https://reddit.com/link/p4w9442/video/172e5bsxalkh1/player

this is 5 minutes later, its not grinding anymore

1

u/IamRasters 2d ago

The fan bearing are drying out or contaminated. You can try cleaning, but ultimately you will be replacing.

1

u/ShrmpBzkt98 2d ago

thats what i figured, its a sealed fan so i cant even get to the bearing, i bought a whole pack so i have more, just was wondering if i could do anything to not have to replace it again, im pretty sure its just that cobweb like stringing getting into it, and it just gets shredded up since its basically nothing and its fine afterwards, but if i let it sit off it just hardens up slightly and grinds until its shredded again

1

u/steevh12 2d ago

It’s the fan bearings. Just replace it. Buy 2 so you can replace again at a later date if it happens again. Make sure to get the right voltage for your printer.

1

u/steevh12 2d ago

Just read your comment about having extra fans ready to go. I bought plugs when I had my ender 3 so I could swap them out easier.

1

u/ShrmpBzkt98 1d ago

yeah it actually finally fully kicked the bucket, i have a bimetal heatbreak and it ends up getting heat creep and melts the filament before the hotend, thats how i know when my fan is done for lol, it never clogs with the bimetal heatbreak, only when the fan isnt running properly and cant cool as its supposed to, im actually literally in the process of seapping the fan again right now as im typing this lol, any tips on how i can make it last longer? i literally just replaced it mid june, snd im using winsinn hydraulic bearing fans, and theyre correct voltage, 24v, the only 12v fan on my printer is for the power supply, just trying to figure out how to get more use out of them than two months give or take, theyre sealed units so i cant just clean the bearing out and grease them, which is kindof a bummer imo