When I first received this attachment I was impressed. I've printed some highly abrasive filaments (carbon fiber and glow-in-the-dark blends) and it handled them with no noticeable wear. However, about 2 weeks into ownership I reinstalled the injector, tightened it to my normal torque (I use a 3D printed torque wrench specifically for injectors) and the injector head broke off. This not only broke the nozzle but rendered my heater block unusable as the bottom half of the nozzle was stuck inside with threads. I don't know if I just received a dud but I am very disappointed with how quickly it broke and that I also need a replacement heater block!
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