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Ender 3 Pro Fan Shroud for 4020 Fan w/ BL Touch Mount

by jass_on Jan 26, 2019
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Sadly this didn't seem to work for me, I had a few issues;

(I'm standard with glass bed, but with noctua fans).

I printed the BL touch version (thinking on adding at some point), but noticed this mount was beyond the carriage so it was stopping the carriage hitting the stop switch (which made the motor have a heart attack (And me!)). I managed to just cut back and easily sorted.

Sadly I noticed that the shroud was just too low and catching on the bed and then just taking the print off... In the end it actually caught on a glass bed clip and ripped off completely. So where it mounts on need to be a bit stronger and it needs a bit more integral strength as it seems to misshape and sag a bit making it even lower.

Basically it needs a minor adjustment to ensure that the BL touch mount is a bit shorter. The support mounts need to be a bit stronger (somehow) and it needs ideally a thinning out on the bottom to try to bring it up a bit higher. I'll try and do a remake if I catch the time to do these. Thanks for posting though.

Thanks for the feedback. I have uploaded an updated STL with an adjustment that should allow the limit switch to function properly.

Can you post a picture of where it is too low? I dont use binder clips but there is several mm of clearance between the nozzle and the bottom of the shroud. There is roughly 6mm between the bottom of the shroud and the bed when printing the first layer.

I haven't noticed any sagging on mine so far and I have been printing ABS almost nonstop for a few weeks. Ill work on adding a bit more structure tho around the mounting screws.

Edit: The modified STL has 2mm more clearance and a rib to help stiffen things up near the mount.

Wanted to thank you for the great design, 100% as the original, as I wanted, just big enough to allow a 40x40x20 fan to be used.
I already posted a make, but I wanted to say again thanks for this.

(final result in the pictures for who is interested)

Your welcome! Did you have any issues with the 4 posts that go through the fan printing?

No problem at all, printing was fine. After printing I guess if you have to thread the hole usong the screw itself you need to be careful, but usung the tap was a breeze, very easy.