Hello,
I am testing a pre-production print on my X1C. The shape is a half cylinder approximately 8 inches in diameter and 3 inches tall. I am running Bambu PAHT-CF in an AMS, 0.4m nozzle, 0.20mm layer height, standard profile, 3 wall loops, 15% adaptive cubic infill. The material has been dried in a PrintDry Pro3 at 85C for at least 12 hours. I preheat the chamber to 40-45C before printing.
I am consistently getting 2-3 “pinhole” surface defects in the outer wall. I have tried 6 prints so far, and almost all have shown this type of defect in different places on the outer cylindrical surface. There does not seem to be any pattern to where these defects occur. It does not correspond to the seam location or to anything I can see in the slicer. These “pinholes” are 1mm or less in diameter. Images attached.
Has anyone experienced a similar defect when printing PAHT-CF or other materials? Are there any suggested changes to prevent this? I have tried slowing the outer wall speed by 50% with no effect. I have also performed a cold pull to clean the nozzle. Unfortunately, the surface quality at this location is very important.
