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I don't know the official guidelines, but what I do is:
- Clean the nozzle after each print, immediately when it finishes. This avoids build-up of brown goo and contamination of next prints.
- Regularly do an atomic pull to clean the nozzle's inside. But I do a more carefull atomic pull than most others: First, I do a manual retract of the filament after flushing some material (by pulling it back a few millimeters, similar to a retract while printing). This makes it much easier to pull out that piece of filament later on. Then I let it cool down much deeper, to room temp. Then gently twist and wiggle the filament while still cold. Then heat up again to 80°C (for PLA), and *gently* pull while still gently twisting and wiggling the filament. I do no brutal pulling. This gives less risk of damaging the rods or teflon coupler.
- After an atomic pull, poke with a needle (with cut-off and rounded tip) through the nozzle, to remove any coal in the tiny nozzle opening. Then do another atomic pull.
- Regularly oil the rods, and grease the Z-worm.
- Blow or clean away any dust that accumulates in the machine and feeder.
- Replace the PTFE coupler only when deformed (you see this in the atomic pulls).
And that is about all.
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geert_2 558
I don't know the official guidelines, but what I do is:
- Clean the nozzle after each print, immediately when it finishes. This avoids build-up of brown goo and contamination of next prints.
- Regularly do an atomic pull to clean the nozzle's inside. But I do a more carefull atomic pull than most others: First, I do a manual retract of the filament after flushing some material (by pulling it back a few millimeters, similar to a retract while printing). This makes it much easier to pull out that piece of filament later on. Then I let it cool down much deeper, to room temp. Then gently twist and wiggle the filament while still cold. Then heat up again to 80°C (for PLA), and *gently* pull while still gently twisting and wiggling the filament. I do no brutal pulling. This gives less risk of damaging the rods or teflon coupler.
- After an atomic pull, poke with a needle (with cut-off and rounded tip) through the nozzle, to remove any coal in the tiny nozzle opening. Then do another atomic pull.
- Regularly oil the rods, and grease the Z-worm.
- Blow or clean away any dust that accumulates in the machine and feeder.
- Replace the PTFE coupler only when deformed (you see this in the atomic pulls).
And that is about all.
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