DexterTechCoach

Oh yikes! May be! I will definitely look into that. Good catch - thank you so much!

Yep...have done that too. I'm kind of leaning towards just replacing the hot end and starting fresh....

Yep! Tension looks good on the feeder, and we've been loading it correctly. Good thought, though! I can totally see how that's a common issue with us newbies

I did tighten it when it was hot. My next hunch was to replace the PEEK, if not the whole hot end to start new. Just put in a new PTFE coupler, so that's not the problem.

Thank you so much for responding! Have done at LEAST 10 over the past few days. Have only ever used high-quality PLA with this printer. We had an earlier issue with molten PLA oozing on top of the heater block. Per suggestions here, heated the block until the PLA was pliable and scraped it off. After tightening the hot end isolator tube (while the block was warm) seemed to fix the leak. Still have some PLA lingering around the assembly - planning on working on this later Bowden is fully inserted when assembled. If it gives you (or anyone else) any additional clues, when we do a test print, the first few layers come out just fine, but get progressively spaced out and messy before the printhead stops extruding all together. Example below: Thanks again for problem solving with me. We are so frustrated at the moment...

Hello, all! Complete and total novice here, at my wit's end after working on our printer for hours! We have an Original+ in our makerspace that our students (5th and 6th graders) are DYING to use, but I cannot seem to figure out this problem.... Below are pictures of filament after attempting the atomic method several times. As you can see, the tip is coming out clean, but the filament seems to be melting/burning above the extruder head. I am using the exact temperatures specified for the atomic method and am making sure to pull the filament straight up when it has cooled. We had an issue earlier in which the nozzle clogged and melted filament collected at the top of the heater block, which has since, to the best of our ability, been cleaned up. Pictures of our current issue So far, I have tried: [*]Replacing the aluminum heater block [*]Replacing the hot end isolator coupler [*]Adjusting the tension on the feeder wheel Does this look like an issue with the hot end isolator tube, the peek isolator, or the nozzle? We're stumped at the moment :(