I've got some dreadful looking AliExpress hardened steel nozzles that I'll try when I'm bored one day.
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I'll post an update once I get some experience with this one. It advertises 25X more durability, but a fraction of the thermal performance. I've also got a 1.00mm Hercules in the drawer, which has the same coating, but in hardened steel. It's not an exact competitor for the E3D Nozzle-X (also on order) but definitely one to try. So far, I've printed about 25 hours with PETG using it, and I've not had any problems. Right now, I've got a 1.00mm Atlas-series mounted which is advertised as providing 50% better thermal performance than brass while being 5X more durable and coated with their DuraPlat-3d coating. I'm trying a couple of P3-D nozzles out this week. I like the idea of never having to swap nozzles, but I want something that PETG won't stick to, as well. I'll be trying the new CarbonX nozzle from E3D when it comes out in February.
I've been watching this thread for a few days and it just hit me: hardened steel nozzles tend to be stickier than brass when it comes to PETG. If I'm not trying something new out, I tend to keep a 0.60mm hardened steel nozzle mounted. Just for kicks, I'm trying some of the AliExpress hardened 1.25 and 1.50mm nozzles on my i3, but expectations are low for the craptastic nozzles. I'm also trying out P3-D's various flavors of hardened nozzles. The good news is that E3D's Nozzle-X will be available soon, and may eliminate the need to make these sorts of trade-offs. If I'm printing stuff that costs $40 for 750g, I'm not going to sweat a $20 nozzle. I may save $15 with brass, but spend several times that much troubleshooting and chasing quality problems when using very expensive filled materials.
While the wear factor for brass may be overblown (based on what I've seen, it's not), I'd really rather not risk the filament and time involved in a big print with something that's difficult to detect and troubleshoot. Bumping temps 5C is usually a fix for any issues. I use them mostly at larger sizes (0.60 and 0.80mm) and am doing large functional prints, so YMMV and will surely vary for smaller prints. I generally don't notice much of a difference between hardened and non-hardened nozzles. Re: Any reason NOT to have a hardened steel nozzle?
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