So currently i’m using one of these: https://www.th3dstudio.com/product/ezflow-nozzles-copper-nozzles-with-tough-plating/ (the MK8 version). It works well so far. I chose this because A) the TH3D people are great and know a lot about printing and such (i’ve worked with them on my CR-10 stuff), and B) it seemed like a decent compromise between any majorly hardened/specialty nozzles and the basic brass ones where I could switch between a few of the more basic filaments I use.
So far I’ve generally using PLA and sometimes TPU. I am using the adapter “required” from this thread (Printing TPU with A250) needed to help with the flexible filaments, but I want to reprint it and maybe fill it out a bit more so it’s tighter once installed as right now it’s a bit loose.
Currently dealing with a minor shifting issue. Not sure if I just need to break everything down and perform some maintenance, which I should probably do as i have a lot of pending mods and such to do, or if the edge of model catches and things “shift”. That’s the reason i am mentioning it… because there is talk of the nozzles, and this one i’m using is supposed to have more heat transfer, and as i’m trying to print in “finer detail”, sometimes the edges of the print “curl”, I noticed on 1 print some “snapping” where the edge of the print would catch the fan box as the module “re-entered” the model for that next layer. So since my setup has EXTREMELY good adhesion, if the curl is high enough, and the nozzle catches the edge of the model, I can see the linear module skipping and the model not moving. (printing on Anycubic glass, screwed to the bed for perfect level. Will showcase when the mod builds are all done! but other info on glass printing: A350 - printing on glass).
I did have a bit of a failure on TPU the last attempt with this nozzle, but i think it just needs dialing in because it’s def different than the brass. What i like about it (esp with TPU) is that it doesn’t stick to the outside.