M6 High Temperature High Flow Hardened Steel Nozzle 0.4mm Compatible with 1.75mm 3D Printer Volcano Hotend Heat Block Sidewinder X1 X2 AC Vyper Kobra Max Print PEI PEEK Carbon Fiber (0.4mm)

I bought this nozzle and a brand S nozzle in .6 width to use for printing TPU. I suppose because it was nice and shiny, I ended up using the brand S nozzle. My TPU prints had a distinct graininess to them, but I figured that was normal. Well, one day the brand S nozzle clogged and I switched over to this nozzle. Wow, what a difference in print quality. I don't know if the steel holds the heat in better or what, but my TPU prints are smoother and shinier. A most definite improvement. This will be my go-to nozzle for TPU going forward. If you level your bed when you swap out nozzles, you won't have any z-height issues or gouging of the bed.

If your review mentions the nozzle is too long, it's time to return to 3d printing school. Those with nozzle based auto leveling will simply need to run the auto level. If you have a manual bed, you manually adjust. If you have a bltouch or other leveling sensor, Google how to modify its height.Never clogs, hasn't worn, still working well. I'd say it's a good product in general.

The nozzle has an off size installation nut so it requires a different wrench. The image shows a full hex nut on the nozzle. It comes with just two flats so a socket cannot be used to install it. After I got it installed it continually plugged up. I cleared it three times and is still would not work.

It ultimately didn't work in my machine, and I'm not entirely sure why? But the nozzle itself seems great!Solid build quality for sure

Ok, so some have complained that the tip on this is different/longer then the normal nozzle, and to that I have to say "so what?" it is no big deal, just level your bed properly as you should each time you change the nozzle and you will find that this nozzle works great, matter of fact I almost like it better then the coated stainless I use. This nozzle prints like a dream with all sorts of materials, but I primarily use it for wood and carbon fiber materials and it works great for that. So don't let the other reviews scare you about odd length on the tip, if you know how to properly level your bed (build surface) then you won't have any issues!

Have not yet installed this hardened steel nozzle, but noticed that its cone is significantly longer than every other volcano nozzle I have. The thread length is the same, as are the flats on the end nut, but the cone angle is steeper resulting in the extra length - measuring just by eye, it is somewhere between 2 mm and 3 mm longer than a regular volcano nozzle cone. The impact of this, since the rest of the hot end will remain unchanged, is that the nozzle tip will wind up 2 to 3 mm closer to the print bed, and the print bed will need to be lowered by that much whenever this nozzle is installed (and the inverse when changing back to a regular nozzle). This is at best inconvenient, for those like me who use manual bed leveling, and at worst a potential disaster, if inattention allows damage due to bed contact.Maybe I am ignoring something potentially useful with this cone difference that makes any extra changeover effort worth it - maybe there is less chance of filament curling back and sticking to parts of the nozzle with a steeper cone? Perhaps this nozzle will print both abrasive and regular filaments equally well so that the need for nozzle changes is reduced or nearly eliminated?I don't know, but until I get the time to find out, two stars off for being physically different from normal cones with no explanation or installation warning.

Yes it is compatible with Flsun V400. I was concerned at first but 12 dollars?? nothing to lose. My V400 was very sloppy at first then got stuck. I almost messed up my extruded, I then took the whole thing apart and decided to try this hot end. it’s printing amazing good and smooth!!! go for it!!

This steel nozzle is exactly what I was looking for. The manufacturing is high quality. Inspection showed no burrs and the nozzle opening is the advertised 0.4 mm. Printing using PTEG has been flawless. I look forward to printing using carbon fiber filament.