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

Extrusion width is difficult to control. It depends on many factors and there's no simple setting to make it work. This is a simple methodology to get you started.

Source of info in this video

• Enter dimensions of spool into the settings panel
• Set initial parameters
  • All heaters: 10% above the melting temperature (see datasheet of the material)
  • Extruder speed: 5rpm. This is a good starting value. Common values are between 3.5 and 6rpm.
  • Fan: 50%. Changes to the cooling have a big impact on the filament.
• Apply the settings
• Start logging with Devovision
• Test extrusion.
  • Check for unmelted particles (too cold)
  • If filament is too viscous, lower the temperature
  • If there are bubbles, the filament needs drying
• Start adjusting the temperature in 10 to 20°C steps. Wait 10 minutes for the change to take effect. Patience is key.
• When sweet spot is found, set up the temperature profile
  • Bell shape: heater 1, 2 and 3 increase the temperature. Heater 4 has a lower temperature
  • Unclear how to determine a profile, or why it's necessary instead of using all heaters at the same temperature.