I have a vertex printer with 2 nozzles. After the first 3 hours of printing, the right nozzle was not printing anymore.
after dismantling the head I found out that the nozzle was not clogged. The filament was stuck in the isolator. Luckely I was able to remove it. the filament I took out the isolator looked a little overheated…brown in stead of transparent (sorry I did not take a picture of it)
After 2 more hours of printing the other nozzle was not printing any more…again the filament was stuck in the isolator. As this happened two time in a very short time with two different isolators I asume that I’m doing something wrong.
Here you can find 2 pictures https://youtu.be/f9JNkx6MUOU
It looks like the filament is sometimes too thick to pass the isolator. I have bought original Velleman filament at the coolblue shop.
You’re probably printing with a too high temperature. It causes the filament to soften before the nozzle and making a blob. then the overheated filament burns in the nozzle.
To avoid this use lower temperatures than the ones recommended :
PLA : 190-195° (can vary with the brand and color of the filament).
ABS : 215-225° (id).
To clean the nozzle no need to remove it from the heater block (but remove the peek tube). Heat the heater block with the preheat function and use a hex wrench or a drilling bit to push the filament When you remove the wrench the burned filament will stick to it and you can remove it. If needed you can carefully use a drill bit (by hand) to clean the remains of charred filament from the nozzle.
You are right I was printing my PLA filament at 210°C.
I was able to place a new peek tube in the isolator, and I was lucky…the “load filament” procedure was enough to clean the nozzle. (I think the filament in the nozzle was not burned yet)
I made a calibration print at 195°C and this works indeed also fine…195°C will now be my default temperature for PLA
I have this issue, where the filament bends just before the before the isolator or inside nut that feeds the fillament into the isolator. That is, it bends where the feed tube is being pushed into the nut, that feeds the isolator and down. I use PLA at 185 degrees. Can the isolatotor for some reason need replacement or can the tube inserts in the isolator need replacement somehow?
I have replaced the nozzles in hopes of solving the seemingly too high resistance somewhere in my system, but I cant really figure out where to start. Both my nozzles clogs within minutes.