3devo Extruder

±0,1mm deviation is in spec:

Bad: < 2.75mm
In spec: 2.75mm
In spec: 2.85mm
In spec: 2.95mm
Bad: < 2.95mm

• let hopper run enpty for approximately 15 - 20 sec
• add little batches of material each time
• when the extrusion is pure, add more of the material

PLA, HDPE & DevoClean-mid-temp can stay in extruder after shutting down. All other materials need to be flushed out (with purge material, PLA or HDPE)

• 4-6 hours @70-80°C.
• Other sources say to stay below 40°C

• When the filament is too brittle
• Boil water in a large pot.
• Place a test piece of filament into the boiling water with tongs for 6 seconds.
• Allow the filament to dry completely (we recommend at least 24 hours). Do not dry the filament in direct sunlight.
• Test the re-hydrated filament with your 3D printer.
  • If filament sizzles when printing, we recommend re-running the process, but only re-hydrate the filament for 2-3 seconds
  • If the filament is still too brittle, run the process but re-hydrate for 10-12 seconds.
• Submerge the entire spool in boiling water for the same amount of time which worked for the test piece.
• Allow the spool to dry for at least 24 hours.
• Your filament roll is now hydrated and ready to use again.

Info summarised from here