I don't see the "gap" in the red photos.
Did you print a skirt around this part? I recommend at least 1 complete skirt to get the filament to start flowing correctly.
I don't see the "gap" in the red photos.
Did you print a skirt around this part? I recommend at least 1 complete skirt to get the filament to start flowing correctly.
First Layer problem & shrinking
What is the "shrinking" problem?
I don't see the "gap" in the red photos.
Did you print a skirt around this part? I recommend at least 1 complete skirt to get the filament to start flowing correctly.
we do not see him too much because the other layer is partially clog the hole:
here is it is during the first layer :
Yes i use the skirt option for the pink one, but i have disable it for the green because it made a diagonal line in the middle of the cover.
What is the "shrinking" problem?
the kind of small "hair" due to the retraction I presume :-|
YES !
i have re-level the bed via the maintenance menu & now the first layer run smootly flat & good
Thx gr5
Just out of curiosity, did you level it to come closer to the nozzle or further away? To me it looks like the bed was too far away from the nozzle, not too close.
i dont know... i think it was further away from the nozzle, i have just re-lunch the bed-leveling guide from the start but this time I bring the nozzle a little closer to the paper.
definitely cleaner !
Fabio
This post could (still) be useful if the photos were still there.
Unfortunately, all of the originally posted photos are missing.
Edited by atelier522
Hey @atelier522 welcome to the Ultimaker Community. 🎉
This is post is 8 years old, these must have gotten lost in the migration to a new platform.
If you are running into any problems and need help troubleshooting.
I encourage you to create a new post and we can try to help us as best as we can.
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gr5 2,224
It looks like underextrusion caused by the extruder missing steps. This is very common on the first layer.
The extruder motor has a low amount of electric current going to it (on purpose) so that if the pressure gets too high (about 5Kg) it skips back a bit instead of grinding the plastic to powder.
This only happens on the first layer (likely) because your levelling isn't perfect. Your first layer is probably about 20 to 50% too close.
Most people take care of this by printing the first layer thicker - e.g. .3mm. You have it set to .2mm which is already thicker than your remaining layer height - good start.
I would re-level your bed but level it slightly higher (.05mm higher).
Alternatively you could reduce flow for the first layer to about 70% and then put back on 100% for the second layer.
When you print it's good to watch the extruder motor turning - when it skips it makes a distinctive sound - similar to the sound when you change Z to the next layer - but different.
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