Hi everyone, I’m having constant clogging issues with my printer that sprung up out of nowhere. I’m running out of things to test.

The printer had been running several prints a day for several days when I decided to change nozzles for one print. Ever since then (~2 weeks ago) i have not completed a single print, due to clogging. I have tried:

Replacing the PTFE tubing in my hotend.

Replacing the nozzle. (I’ve used a handful of nozzles, all with the same results)

Trying different filament.

Replacing the hot end with an all metal hot end, trying three different heat breaks from two manufacturers.

Removing the printer from its enclosure to ensure proper cooling.

Adjusting extrusion tensioner.

All the other basic obvious stuff like making sure there’s no blockages anywhere (whole hot end and nozzles have been soaked in acetone, torched, brushed etc).

The printer will seem to work fine for a little while before either slowly failing to extrude until it completely jams, or it completely jams all at once. I don’t think it’s heat creep, because I tried setting the nozzle to printing temp, letting it sit for half an hour or so and running filament through it and it had no issue, whereas prints usually start to fail within the first 10 minutes. It also doesn’t have anything to do with my print settings because I’m able to get it to clog sometimes by just running the extrude command.

I’m completely at a loss here. I don’t know what else to try. Does anyone have anywhere else for me to look?

  • papalonian@lemmy.worldOPEnglish
    0·
    7 months ago

    Do you know of any ways to test/ eliminate heat creep as a cause? I keep seeing it as a possibility but I’ve tried a couple things and I don’t think it’s that. The printer has been running in the same enclosure for ~ one year, but I took it out to make sure it’s getting cool air to the extruder, I’ve tried heating the nozzle to printing temps and leaving the filament in the nozzle for a long time before extruding (trying to purposely replicate heat creep), and I’ve tried simply touching the heat sink after it’s been at temp for a while and it’s still barely warm to the touch.