Hi
Do hot ends have a short lifespan ?
I have had to replace my J-Head 3 times in 6 months - I'd say that I'm running the printer for approx 15 - 20 hours a week using PLA and a 0.4 mm nozzle.
For some reason I will randomly get a jam in the hot end and I am able to fix temporarily by cleaning the nozzle, but it comes back after a couple of prints. After 3-4 attempts at cleaning the noxzle over a week, I end up replacing the hot end and it runs fine again for or a month or so.
Cheers Graham
