Ultimaker S3 - Material Specific Troubleshooting

Ultimaker S3 and Ultimaker S5 user manual 29
Grinding PVA
Incorrect material handling or storage can lead to grinding of the material. PVA should be printed and stored at a
low humidity to avoid problems while printing. We advise a humidity below 50% for storage and below 55% while
printing. It is also recommended to keep the ambient temperature below 28 °C while printing.
When PVA is ground down by the feeder, there are three main causes:
• Incorrect storage. Ensure that the PVA is stored in the recommended conditions
• Coated Bowden tube. Clean the Bowden tube and dry it very well
• Clogged print core. Clean the print core with hot and cold pulls
For more information on how to resolve grinding issues, take a look at the Ultimaker website.
Under-extrusion
In simple terms, under-extrusion is when the printer is unable to supply a sucient amount of material. Your
Ultimaker S3 / S5 is under extruding when you see missing layers, very thin layers, or layers that have random
dots and holes in them.
Under-extrusion can have several causes:
• Use of low-quality material (diameter inconsistency) or incorrect settings
• Feeder tension not correctly set
• Friction in the Bowden tube
• Small particles of material in the feeder or Bowden tube
• A partial clog in the print core
If your Ultimaker S3 / S5 is aected by under-extrusion, it is advised to take a look at the Ultimaker website for
detailed troubleshooting instructions.