Worsening pockmarks?
I've had pockmarks occur when printing with PLA on my Prusa Mini and was able to address them by reducing my retraction length from 3.2mm to 2mm, but they suddenly got a lot worse recently.
I've been printing the copies of the same print around the clock for the last day or two, and suddenly yesterday evening they started getting pockmarks in the same area. Since my retraction length was already down to 2mm, I tried reducing my nozzle temperature from 205C to 195C. That reduced the number of pockmarks, but a few were still present, still in the same area.
I thought maybe it was a nearby seam causing the issue, so I moved the seam to be aligned along the rear of the model, but that made the issue far worse, with long bits of filament hanging off the model all over. I moved the seam back to its original aligned position, and tried keeping my retraction length at 2mm but reducing my retraction speed from 70mm/s to 40mm/s, but this caused my print to completely fail- the supports failed near their bases, and pockmarks with bits of filament attached occurred lower on the model than before. Inside the failed print, I can see that the grid infill isn't always connecting to the other walls of infill? I assume that's related to whatever's started going wrong with this print.
Any help is greatly appreciated, I'm on a deadline for these prints and am falling very behind because of this.
Original pockmarks:
Worsened pockmarks, filament hanging off print
Failed print
That looks like damp filament, how are you drying it? Check your dryer is keeping up as we get humidity changes with the seasons.
Cheerio,