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This looks like massive underextrusion. The base is fine because you are printing slower and so the filament can keep up but cura then speeds up as you go to higher layers and also turns on the fan. I'd say either the printer is defective or you are just printing too fast (or both). If this was a UM2 I'd say you probably need to change the teflon coupler as it is causing too much friction.
I could be wrong - it would be helpful to see what this part is supposed to look like. Is it supposed to have lots of little vertical posts? Maybe you jsut aren't retracting enough or retrating too much. For a printer where the feeder is on the case of the machine and there is a bowden connecting the feeder to the hot end, you want lots of retraction - like around 4mm. for a printer where the feeder is moving with the hot end you want very little - like 1mm. Too much or too little retraction can cause prints like this.
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gr5 2,331
This looks like massive underextrusion. The base is fine because you are printing slower and so the filament can keep up but cura then speeds up as you go to higher layers and also turns on the fan. I'd say either the printer is defective or you are just printing too fast (or both). If this was a UM2 I'd say you probably need to change the teflon coupler as it is causing too much friction.
I could be wrong - it would be helpful to see what this part is supposed to look like. Is it supposed to have lots of little vertical posts? Maybe you jsut aren't retracting enough or retrating too much. For a printer where the feeder is on the case of the machine and there is a bowden connecting the feeder to the hot end, you want lots of retraction - like around 4mm. for a printer where the feeder is moving with the hot end you want very little - like 1mm. Too much or too little retraction can cause prints like this.
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