1piece High Temperature Sharp Hardened Tool Steel MK8 Nozzles 0.4mm for 1.75mm Makerbot, Creality CR-10 All Metal Hotend, Ender 3/ Ender3 pro, CraftBot, Prusa i3 3D Printer

Lasted for 8 prints ...... dumb for the price super disappointed for the price brass lasted longer

Pretty good, just sucks you cant tell what size it is bc there no ingrained on it

The nozzle had been used and was covered in melted plastic (inside and out)! This is crazy unacceptable!

I recently purchased this nozzle with the intent of using it for printing heavier materials and lasting longer, which I believe is what draw a lot of others to this nozzle. When using regular brass nozzles, heavier materials such as carbon fiber and wood will wear the nozzle down more rapidly to the point where you will likely need to replace it often (roughly every 1-4 weeks depending on how frequently you print). The drawback to going with a steel nozzle is that you will usually need to adjust your print temperatures by roughly 10c to be able to print with the same materials. Unfortunately, increasing temperature 15c or even 20c wasnt enough to work in this case, even on a fully upgraded CR10. When the material was starting to come out evenly, my extruder (a BMG) was having difficulty pushing materials through, often causing them to get backed up and my extruder to slowly give out. I practically had to push the door in firmly and hold it in to put enough pressure on it to push the material though evenly. I will state though that when I switched to regular PLA it seemed to work pretty well with no issues, but if you arent able to print tougher materials easily then whats the point of purchasing this item? That point more or less undermines one of the main purposes of upgrading to a steel nozzle, though I would imagine that it would at least last a bit longer than a brass nozzle for printing regular PLA. Overall Id give this a 2.5, rounded up to a 3.

This nozzle is not compatible with the prusa I3MK3S. I have ruined so many prints thinking it had to do with my print setting and not the nozzle the seller sold me. Very Disappointed and would not recommend it to anyone whos buying this for their prusa printer

All kinds of problems. Never had problems with any other nozzle. Decreased line width to 0.3mm, better, but still not there. I believe what should be a 0.4mm must be a 0.25mm. After hours of trying to get a good print, back it goes. Put back on my previous 0.4mm, and back to a perfect print.

Does what its supposed to do.

Oozing out from the treads after after a more than adequate tightening. Ruined the last print by one of those bubble bombs growing large until it drop bombed the print while I wasnt even in the room. Going back to original brass tips.

completely useless after 1.2kg of carbon fiber nylon, i tested brass for the hell of it and i was able to get 500g out of it, and e3d hardened nozzles got multiple kg of CF nylon through it.

I bought this to replace the original brass nozzle that came with my Ender-5. Not much to say other than it works great with PLA. Ill be trying PETG with it soon.