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Different nozzle types

Relevant for

MK4 family
XL family
MK3.9 family
MK3.5 family
MINI family
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The Prusa FFF printers are equipped with a brass nozzle. Brass has excellent heat conductivity and is tough enough to print most common filaments. However, when using abrasive filaments, the brass nozzle tends to wear too quickly, so abrasion-resistant nozzles are available. 

Depending on your printer model, the hotend uses either an E3D V6 nozzle or a Prusa Nozzle. If you want to use E3D V6 nozzles on printers designed for the Prusa Nozzle system, a Nextruder V6 Nozzle Adapter is available. 

This article provides an overview of the different nozzle types used across our printers and explains how they fit into each system. For more detailed instructions, recommendations, and compatibility information, please follow the links included in each section.

Prusa Nozzle

Designed for Nextruder-based printers (CORE One, XL, MK4/S, MK3.9/S), the Prusa Nozzle is built for cold, quick swaps and maximum convenience. It is available in a range of materials and diameters. 

Check out the detailed information in the dedicated article for Prusa Nozzle types for Nextruder printers

E3D V6 nozzles

The E3D V6 (and E3D V6-compatible) nozzles are used in the MK3.5/S, MK3/S/+, MINI/+, MK2.5/S, MK2/S, and earlier models. They are a widely adopted standard, but they must be tightened while hot to ensure a proper seal and avoid filament leakage. The filament is led into the heatbreak through a PTFE tube. 

Find out all the E3D V6 nozzle types and their details in the dedicated article for E3D V6 Nozzles

Nextruder V6 Nozzle Adapter

The Nextruder V6 Nozzle Adapter enables your Prusa printer’s Nextruder to accept E3D V6 nozzles.

If you need to install or replace a nozzle with a Nozzle Adapter, please refer to our guides: 

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22 comments

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Sembazuru
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I have some some confusion about the difference between the "E3D Prusa Nozzle: High Flow Brass" https://www.prusa3d.com/product/e3d-prusa-nozzle-high-flow-brass-0-4-mm/ and the "Prusa Nozzle brass CHT" https://www.prusa3d.com/product/prusa-nozzle-brass-cht-0-4-mm/ other than the obvious that the first is $10.50USD more expensive than the second in your store.

* Is there any performance difference between the two?
* Is there any way to discuss any differences on the internal geometries or other techniques to enable high flow without violating any NDAs?
* One weakness of CHT nozzles is the difficulty of cleaning jams because of the multi-path internal geometry. Does the E3D nozzle share that weakness or have a similar weakness?
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Aniraf
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Is there a way to identify CHT nozzles vs. the original non-CHT versions?
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Jan Kratochvíl
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Hello. The standard nozzle has 'PR' printed on it, while the CHT nozzle has 'CHT' printed on it. Additionally, the CHT nozzle has a Bondtech logo on one side of the head (where the dots are).

Reply
Byron
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Does the nozzle size in firmware really matter?  I'm trying to use a 0.5 nozzle and the firmware setup only offers fixed selections of .25, .4, .6, .8.  I have this 0.5 I'd like to use and a 1.0, but of course no option to enter my own nozzle size into firmware.I get that I'll need to write my own PrusaSlicer profile since none are offered stock for 0.5.  But that's not a big deal because I've already had to do that for my 0.6 as the stock profiles for anything but 0.4 are frankly so ill-tuned as to be useless without heavy modifications.But the firmware, that I didn't expect to lock me into fixed values...?  Especially seeing as how Prusa themselves apparently has been selling 0.5 nozzles for at least two years now and yet no firmware support?
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j.Moen
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Having same issue here. I have a .2 and .3 nozzle, neither of which is in the printer firmware. It seems to be just the nozzle checking feature that is affected. So you get the message about nozzle size error, but you can just print anyway. It prints fine. But you gotta be sure the right nozzle is actually in there. My kids like to print too, so now we all need to be aware what size nozzle is in there to avoid mistakes. Bummer you can't add sizes to the firmware, like adding extra print plates.
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Juzam
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Can we use MK8 nozzles with the nextruder adapter since the MK4 uses loadcell calibration?
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Skirfir
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I recently ordered a MK8 nozzle by accident and I realised my mistake when I assembled it because the thread of a MK8 nozzle is shorter than that of a V6 nozzle which means that you can't tighten the nozzle against the adapter and it would leak.
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Radwolf
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The link to a test model for different nozzles doesn't bring up anything, nor can I find a Prusa-made model for it. Has the model been removed for some reason? 
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