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

Yuk!! Great for glow in the dark filament. But using stander filaments started to clog. End up replace original nozzle.

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 go thorugh nozzles pretty quickly, this one preforms as promised and is relatively inexpensive.

Bag is labeled .6mm but the nozzle is in fact a .4mm. There are no markings on the nozzle to show nozzle size, so I assumed it was correct. I was having issues for days trying different extrusion settings and it was just this nozzle being the wrong size. Purchased a micro swiss .6mm to replace it.

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.

Took me a few days to dial this nozzle in, but once I did I had no issues whatsoever; I was actually able to get better print quality out of this than a brass nozzle (Managed to pull off some near-SLA quality details on a miniature with the 0.4 mm which is pretty astonishing). That being said, I had to bump my PLA from 205 up to 220, and had to go all the way to 260C for PETG. Works like a charm with the half-kilo or so of carbon fiber PLA Ive printed, however. Overall, this is definitely worth the $6 if youre looking to print something more abrasive; just be ready for a big temperature increase.

Easy to install and great performance all around. I feel like they last way longer than brass.

I never had any success with this nozzle. Very likely problems were from other part of printer. But never had a successful print with this nozzle.

The threads are WAY too short to work for a Prusa i3 MK3s. The heater block will have to thread in so far that your carriage WILL melt.

really good