Printing the same files for years, now sudden issue pops up
Hello everyone,
I'm coming here because I'm at my wits end.
I've been printing the same files for years (for my side business) on my Prusa Mini+ without issues. For the past few weeks I've been having a weird issue that I blamed on some extrusion problem, however after working on it it doesn't seem to be the issue.
My printer is 3 years old.
What was done on the printer since I got it new: I didn't change much on it, just switched the OEM heatbreak for the Trianglelab titanium alloy one year in and it's been working great for the past two years. Everything else is OEM. I changed the thermistor and heat cartridge five months ago as I had heat creep issue that was resolved after the repair.
What I tried to do after encountering this new issue: tested different filament, files, changed nozzle, changed print head PTFE tube, cleaned everything.
See the following pictures of the issue I'm encountering:
File I've been printing for years.
Test print after changing nozzle and print head PTFE tube.
So yeah, I'm lost. I don't know what else I can do. Any suggestions? The weird lines go all around the print. They also appear completely randomly on the print, not at a specific layer.
Thank you for your help.
RE: Printing the same files for years, now sudden issue pops up
Wasn't there just a firmware update.? Did you install it? Can you revert to the previous version and see if it fixes it?
RE:
I suspect long PTFE between the extruder and the print head is worn out and is causing filament getting jammed and thus under extrusion.
See my GitHub and printables.com for some 3d stuff that you may like.
RE: Printing the same files for years, now sudden issue pops up
I didn't. Maybe I should!
Wasn't there just a firmware update.? Did you install it? Can you revert to the previous version and see if it fixes it?
RE: Printing the same files for years, now sudden issue pops up
I suspect long PTFE between the extruder and the print head is worn out and is causing filament getting jammed and thus under extrusion.
If you're talking about the print head PTFE tube (the short one like this one: https://help.prusa3d.com/guide/how-to-replace-a-hotend-ptfe-tube-mini-mini_119449), I changed it yesterday. The orange print is the test print after the change. Unfortunately it didn't do anything. Or maybe you meant something else?
RE: Printing the same files for years, now sudden issue pops up
No, I meant the long PTFE tube between extruder and th print head explicitly, because you have replaced the short one.
Also double check of the short one is properly compressed.
See my GitHub and printables.com for some 3d stuff that you may like.
RE: Printing the same files for years, now sudden issue pops up
No, I meant the long PTFE tube between extruder and th print head explicitly, because you have replaced the short one.
Also double check of the short one is properly compressed.
Oh I see. I might as well try that, as I already have the tube.
I tripled checked the short one, I think it's properly compressed. Also my short one is a specific size because I have a Trianglelab heatbreak now, so hopefully I didn't mess that up.