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R0b0Genius

Prusa MK2S Fan-Nozzle

by R0b0Genius Apr 27, 2017
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Any word, does this work with an e3d silicone sock?

It fits, however, because the sock is so close to the tips of the vent, it causes drooping when using PETG (first hand), and ABS (second hand).

Any chance you'd be up for remixing this for the MK3? I am just beginning to learn Fusion 360, and I couldn't possibly design something this involved yet. Nobody seems to have made a really good duct for the MK3 yet, and this one worked like a charm on my MK2S.

Comments deleted.

0.39mm nozzle diameter is too big.
the right size is 0.3mm

I can confirm the need for additional clearance. PS: This was ABS

https://www.youtube.com/watch?v=M8xfsw9RDnc

Video of prints with stock fan shroud and with this one.

Great design!

I seem to be getting stringing between retractions when using this nozzle with no settings change. Do I need to be changing something in my gcodes ?

BTW: the screw head cavity blocks the complete first airflow channel and half the next one.
Maybe you rearrange the internal ducting in that area.

But nice work anyhow!

Seeing the same thing! ^^

Anyone use this with the silicone sock from e3d. I tried a similar design and the sock was too close to the part and caused it to melt.

I did with the PETG duct and had the same result. I'm not sure about ABS, but the heat did cause the tips of the ducts to droop.

I had the same problem with ABS I think with the sock there needs to be some additional clearance to prevent drooping.

Awesome feedback, thank you - another redesign is in order!

That would be awesome! I started trying to model up something that would work with the sock but haven't gotten very far. How did you go about making your design? Did you start from scratch, are you working in openscad using the original model or did you load the scad model into some other software?

That would be awesome! I started trying to model up something that would work with the sock but haven't gotten very far. How did you go about making your design? Did you start from scratch, are you working in openscad using the original model or did you load the scad model into some other software?

Printed with Tianse (Black) from Amazon on the I3 MK2s and printed/works like a charm (PLA). (Slic3r Prusa edition *with adjustments).

Interior vent ribs and everthing.

Thanks!

Is it supposed to print those little slots inside the duct? For some reason PrusaControl is ignoring those slots and just leaving the inside ducts completely hollow. This is fine except that the overhang on the top will totes fail with my filament

Those are optional, and will only print with extrusion widths under .39mm.

So PrusaControl will ignore them. I am using Slic3r PE, and have enabled "Detect Thin Walls" under Layers and Perimeters. I also set all of the extrusion widths to .39mm. I will post back after I print this piece!

Printed in Colorfabb HT, made multiple prints after and it holds up.

Print quality have increased in prints with much overhang. This upgrade is a nobrainer for me !

i wish this was compatible with the prusa with the noctua fan upgrade done :(

This sould work with my nocuta fan 60mm upgrade

I run both the Noctua upgrade and this duct mod - no problems! Have you tried it and run into issues?

Would this work on the MK2 (not MK2S) also?

It absolutely would - but if you are not looking at an upgrade to MK2S anytime soon, look in my things for "Prusa MK2 Fan-Nozzle". The only difference between the MK2S version and the MK2 version is that the MK2S version has a notch to accommodate the redesigned PINDA probe mount (which potentially blocks the airflow ever so slightly).

Will this fit on a Multi Material extruder?

Update - I just finished installing my MMU last week and this fits just fine.

I haven't received my MMU yet, but importing the STLs from Prusa and overlaying them, it appears that the lower part of the extruder body did not change in the upgrade - this SHOULD work on the MMU.

Does it hold up with PETG? It's quite close to the nozzle on the right side looking at picture number 2

I tried Makergeeks PETG and had a saggy duct within the first five minutes of my next PETG print. Looks like this is going to depend quite a lot on your exact filament. It's really easy to switch the fan duct out, even mid-print, so there's no harm in trying. If you get some sagging mid-print, just tell the printer you want to change filaments, and you can swap the old duct back on.

I printed mine with PETG, but the left nozzle started melting/drooping. (Not so bad that the hole thing sagged down or anything, but the top angled surface that directs the airflow melted so much that it almost got blocked).

I used PETG from Filament-PM

Out of curiosity, what material and temp were you printing with/at when your PETG duct melted?

Hard to say specifically, since I didn't even notice it at first. I had it mounted for several prints when I was getting my PETG settings dialed in (so around 235-245c).
I first noticed the melting when I removed it to get better access, when some PLA clogged the nozzle.

Must say mine holds up very very wel. Did several petg prints. No drooping or sagging. So quite high print temps. Still going like a champ!

I printed mine in PETG and have had no drooping or melting. I only print in PLA and PETG though, sustained high temps for ABS may cause issues - that's untested.

Great job thanks, will you share fusion 360 compatible files? I want to remix it

Fits perfectly on the MK2S, cheers!