6 of these are in my shop. I did the hyper PLA test on all of them. They all have creality’s hyper pla filament attached of course… Half are having the same issue, half work perfectly. Half are brand new, half are anywhere from 3-10 months old. The oldest one actually is one of the perfect prints. One of the brand news(bottom picture) has the issue.
Its driving me crazy what is causing this. Can anyone help? Why is it 3 out of 3 having issue and the other 3 fine? All the same type of filament. The same file printing. The same settings. etc etc..
All of these printers worked perfect last week. All of a sudden 3 of them are doing this.
Thank you for any help!!
Do you root them to run macros and better tune the printers? Have you checked between the heated bed and the sheet no debris. No drafts or air currents on any of the other printers. Are all filaments perfectly dry?
I noticed sometimes that the hotend and nozzle are not completely fastened correctly. If this is your case, try to tighten the hotend and nozzle.
Be careful when you tighten them both, especially the hotend, because the thermistor and heating core are attached via wiring…
Seth
It sounds very similar to an issue I experienced, filament jamming / hard for extruder to pull off the spool.
I noticed it seems worse the closer to the left (i.e. increased restriction on the chain) vs the right hand side (decreased restriction) seems to print fine.
I removed the filament cable from the chain, re ran test with lid off as a test.
Ok.. So I turned them all off before a Thanksgiving. So they were compoletel off for 6 days. Turned them on yesterday morning. Ran the prints. All were perfect.
What the.
The filament is still hanging on the back. So, it was open to the workshop for the full 6 days. Ran flawlessly after having them off that long.
Then.. today… two of the printers starting having this same issue again. Just like the pictures above.
Any ideas? My only thought is that the weather is getting cooler and maybe the heaters go to a certain temperature and then the filaments get moisture and this happens? Is moisture something that can just appear and then go away from time to time? It just seems so random that sometimes printers work great.. other times it doesn’t work.
It’s just driving me crazy to not know the reason this is happening.
It could be ambient temp related or maybe the side fan / case fan blast?
The issue I experienced seemed to be a filament flow problem, I searched the wiki.
Check the PTFE tube where it leaves the filament run out sensor and runs into the chain rail. I found the PTFE tubing pinched in that area on two of my K1c printers causing the filament to be a very hard pull.