poor print quality after cold pull & tune up
3 - Because I raised the heat block I had to reset the MINDA sensor height and re-ran the live-z which all went fine as well
I also ran one of the needles through the nozzle itself and it seemed clean, and if you purge it all comes out smoothly
These are also using the same gcode files I used before, so I don't think its the file. They all printed fine before the first big clog
RE: poor print quality after cold pull & tune up
Not saying this is the cause, but how humid is your environment? I noticed that most of my failed prints are due to humidity or filament that has been left out for a few days.
RE: poor print quality after cold pull & tune up
Very low humidity here - after I posted this I was reading the "Hardware, firmware and software help" section and started find a lot of similar issues with shrinking PFTE tubes, clogs and other issues which I think is still what I am running into. I may take the entire hot end apart again and double-check it all. Seems like a lot of people in the other section are having the same issues repeatedly with their units.
RE: poor print quality after cold pull & tune up
Yes I notice too. At the same time, I am sure there plenty of owners who have no issue. I had one clog and after I pushed the heater block up against the PTFE tube, the problem went away. That was like 3 months ago and have been printing without issue until the rain season hit us 3 weeks ago and humidity went up. That caused a partial clog that was resolved quickly. And I have zero problem since then.
RE: poor print quality after cold pull & tune up
@alex-hung
That is good to know - I am going to loosen up the heater block again and replace the PTFE tube with the spare, I think I still have some sort of issue going on with that heatblock. Will post an update when I rebuild that tomorrow.
RE: poor print quality after cold pull & tune up
Just a quick update to this - did another rebuild of the hot-end and we're back in biz - I ended up replacing the heat-break, PTFE tube and nozzle just to clear any clogs I couldn't see/figure out and everything seems good. I did end up switching to the Bontech heat-break just to be safe, since I don't feel like having to take this apart again anytime soon