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

I put quite a bit of carbon fiber filament through this nozzle, and it still prints like the first time! Excellent nozzle I highly recommend it!

Easily clogged. For my test run I printed Benchy and printed just fine. Second one I printed octopus for something a little bit bigger and 10 mins left on my timer that’s when I noticed a bad print and the nozzle started showing some goop around it. Third print was the octopi camera case and that’s when it totally clogged.

I placed this in my Ender 3. This was one of multiple upgrades. I leveled the bed and made sure everything was perfect. I printed probably 10 to go 15 smaller prints, none were quite right. I made several adjustments attempting to make this nozzle work, I couldnt do it! After hours and hours of troubleshooting I decided to replace the nozzle with a brass nozzle, much like the one that came with my printer. Upon removing the hardened steel nozzle I noticed the hole was extremely small. I tried to clean it out with my tip cleaner ( this tip cleaner is exactly 0.4mm) it wouldnt fit! Its at that moment I realized the hole was not only too small it was off center.... I think I will stick with brass from now on. Oh once I replaced the nozzle, all my problems went away, immediately!

Fit my Bibo 2 printer perfectly

I received a nozzle with 3 dots on it like the listing says for the .4mm. However the nozzle is far smaller than even my .2mm nozzles. I didnt notice and ended up having to spend a long time unclogging my machine. Im going to shop on ebay for now on for nozzles since this isnt the first time I received the wrong size.

I am not an expert, but I bought this for printing wood PLA and it just does that.

so i ordered the .6 nozzle for a carbon fiber project im starting. for the last week ive been scratching my head trying to figure out why i cant get a good first layer print. ive had so many problems with adhesion and lines being to far apart and for the life of me i couldnt figure out why. i changed every setting i could think of. from line width first layer width and layer heights. nothing worked perfect like it used to. i had problems with my extruder skipping and took it all apart cleaning and checking it. and today i finally was about to give up on it and throw the printer out the window till i thought maybe ill check to see if i ordered the right size nozzle. which i did. i ordered the .6 like i thought i did. and here is my main reason for only giving 1 stars. there is no size markings on the nozzle. no way of telling if you got the right one. so in a last ditch effort i changed all my settings to the usual and put the nozzle size to .4 and what would you know. perfect prints. there is no doubt in my mind this nozzle is a .4 nozzle even if the bag says its .6. ive waisted about 5 days and a bunch of filament trying to get the settings right. im printing something right now and it is near perfect with .4 nozzle settings. highly disapointed it took me this long to figure it out. wont be ordering any nozzles without the size marked on the nozzle.

The hole is too small and filament wont extrude properly. Do not buy

Not actually 0.4mm it’s slightly smaller, and clogs constantly.

Going to give it one more try, but after getting my z offset dialed in for the difference in the length of this tip vs the original, everything seemed to be printing ok for the first few hours, then it clogged up. It was also leaving discoloration in the PLA in occasional spots. Making adjustments and going to try again. Will probably end up returning it and just stocking up on brass nozzles, if I want to do abrasive materials. Update: after further adjustments it printed a bit longer, but still clogged up after about 7 hours.