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

Ive had this nozzle a while its held up perfectly but an issue Im running into is now is that the size of the nozzle isnt on the nozzle anywhere. I had to come to my Amazon order history to confirm that I ordered a .4mm. Maybe I could eyeball it against another .4mm brass nozzle but thats not great. Currently this is the only hardened nozzle I own but that will be changing soon. Ill have to be sure that my next nozzle has the size on it so I can at least use process of elimination to identify this one as the .4

I was printing harder materials such as carbon fiber and needed a more resilient nozzle because id go through a brass one in a couple of prints. I have been using this nozzle to close to a year now and havent replaced it. If it gets clogged, like any other nozzle, just use a blow torch to clear it out. This has been one of my best upgrades for my printer, keeping my prints consistent and high quality.

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.

Nice price

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.

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

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.

With the original ender 3d printer ....its a must have upgrade

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

Good quality nozzle. Direct replacement for our CTC Bizer (Makerbot Replicator clone) printers. I havent tested with an abrasive filament yet, but the nozzle seems great!