The nozzle clogs in PLA

UP300/UP300D
,
1

Hello all,

I have had PLA printing problems for a few days.
I printed more than 2/300 hours without problems.

The nozzle becomes blocked during printing, when I manually extrude the thread flowing normally.
I cleaned the extruder drive wheel and replace the nozzle (0.4mm) with a new one.
I used the standard config for the PLA Tiertime and I tried to lower to 195 ° C and increase to 225 ° C the temperature.

I print without raft on bluetape
…

Do you have an idea?
thank you in advance

2

Is the nozzle too close to the bed? If it’s feeding ok fine, then that seems like the most likely cause to me.

3

Thank you for your reply !
The blockage generally occurs after a few layers, see ten…

I’ll try to increase distance between bed and nozzle.

4

Send a few pictures. Show the first layer being printed and where it fails.