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If you are happy with quality of bottom layer I would ignore it. If you really want to fix it you have to adjust your leveling slightly and give the nozzle a tiny bit more gap. Maybe 1/4 turn on each of the 3 screws.
What is happening is the bottom layer is probably 0.3mm and you actually only have space for 0.15mm so there isn't always enough space for all the PLA to go and so the pressure builds up very high in the nozzle until eventually the feeder gives up and slips back a bit.
But it is better to print .3mm in .15mm space then the other way around (.3mm in .4mm space) as the other way around will give you bad adhesion to the glass.
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gr5 2,330
If you are happy with quality of bottom layer I would ignore it. If you really want to fix it you have to adjust your leveling slightly and give the nozzle a tiny bit more gap. Maybe 1/4 turn on each of the 3 screws.
What is happening is the bottom layer is probably 0.3mm and you actually only have space for 0.15mm so there isn't always enough space for all the PLA to go and so the pressure builds up very high in the nozzle until eventually the feeder gives up and slips back a bit.
But it is better to print .3mm in .15mm space then the other way around (.3mm in .4mm space) as the other way around will give you bad adhesion to the glass.
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