Why, the first print was perfect. I used the same gcode-file, with same setting, same material......and the diameter of the filament was nearly the same.
Why, the first print was perfect. I used the same gcode-file, with same setting, same material......and the diameter of the filament was nearly the same.
Maybe a change in filament diameter. Have you measured the current diameter? Some filaments are from bad quality and change their diameter within the same spool, often more than 0.1 mm which definitely can have an effect to prints, sometimes leading to under-extrusion.
The diameter of my fillament i used in Cura is 2.82 mm. I measure 1m fillament. The real diameter of my fillament varies from 2.83 to 2.90 mm.
Could it be, that there is something destroyed after printing a lot of hours (perhaps 5 hours) in the air...
I have tryed to print a smal calibration pyramid. Same behavior...a small area the print is good and than a smaler area is bad.
Hello Zungara,
Had a similar problem with underextruding. The diameter of my filament was varying from 2.85 mm to 3.2 mm.
When you expect diameter changes you have to measure in more directions since sometimes you can have an oval shape.
Also when your extrusion is fully stopped and measure the diameter just before the feeder, the extrusion the problem might be already gone.
When my filament diameter becomes above 3.05 mm it does not fit through the owden tube anymore.
When the diameter rises above 3.20mm it is diffcult to get the filament out of the bowden tube.
It looks like a blockage in the hot end, but after taking it appart several times I never had a blockage with the V2 Hotend.
Instead of getting another filament supplier, I used a 4mm ID bowden tube instead of the supplied 1/8" ID tubing.
@Ronald: In the past i had the same problem with bad filament you described. But that was not my problem in this case. With the help of Sander from Ultimaker support i found my problem. After the long print the Teflon Insulator was a little bit deformed and this was the reason why the filament was not able to go through the teflon insulator without touching it.
After exchanging the teflon insulator my problem was solved. I was very supprised because it was very less touching the filament.
When my filament diameter becomes above 3.05 mm it does not fit through the owden tube anymore.
When the diameter rises above 3.20mm it is diffcult to get the filament out of the bowden tube.
It looks like a blockage in the hot end, but after taking it appart several times I never had a blockage with the V2 Hotend.
Some where in the Ultimaker description you will find that the filament should not have a diameter bigger than 3.1 mm. If the filament is bigger than 3.1 mm you will first get trouble with the brass pipe and than with the bowden tube.
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gr5 2,224
I think you should try kisslicer.
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