I'm pretty new to the forum but I've already experimented a bit with my 3d printer.
I have a Flashforge Creator Pro (version 1) with which I successfully made several prints with black ABS filament. I assumed I was using the right extrudor temperature, bed temperature and other settings. I'm using a raft.
Trouble arised when I switched to white ABS filament. I wanted to print the exact same model in white instead of black. Two prints went fine, but on the third it stopped extruding mid-print and it appeared my filament was broken. The filament roll seems to have factory issues, so I changed the roll for a new one. Nozzle was clogged, so I did also a complete clean up. By the way, I'm only using the ABS filament provided by Flashforge.
I tried again with a brand new nozzle and different settings for the fan, but experimented the clogging issue once again, this time the filament wasn't broken and it looks good quality.
I don't have any idea of what could be the cause, I've searched for common causes but :
- the filament is still inside and not broken (not a problem of filament supply)
- yes the filament is ground but it happens after, when I try to push it through (it doesn't seem to be a filament grinding issue)
- the extrudor motor driver shouldn't be overheated
However, here are the few things I have been able to notice (see pictures) :
- the nozzle looks clogged, I can't push the filament manually after it stopped extruding and there are some debris inside
- I can see some debris inside the nozzle but the debris isn't obstructing the hole, it sits on the perimeter. I cleaned it up anyway and the ABS residue looks "cooked"
- filament in the extrudor has hollowed, just like it has coated the ptfe tube (I tried to take a picture with the light revealing the hole by passing through it). I don't know how to explain it
- the printing temperature doesn't looks too low, because the filament flows easily, everything is going right in the beginning. Considering the top of the first model I printed, I would rather think my temperature is a little bit too high than too low.
Any suggestion about what could be improved ? I'm running out of idea...
I can provide more details about my settings and parameters if needed, and some more pictures.