These nozzles are precision ground and I use them almost exclusively on my printers of which I have 6 ranging from Delta to CoreXY machines. With abrasive threads, they are short-lived. To do this, buy hardened steel. You can use them on abrasive materials, but don't expect them to last long. They offer excellent print quality for all non-abrasive filaments. Definitely wear better than brass and seem to clog less (but that's just from personal experience). I use it 24 hours a day for TPU printing and have yet to find a more accurate nozzle at this price point.
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