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Strange underextrusion after power failure
Samuel Pinches
Posts: 2,997Administrator
Hi @LifeinLife
Welcome to the forum! I am just copying your message below so that other people can contribute and learn too:
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Wow!! It sounds like you’ve tried a lot of things, with a lot of struggle!
A few questions for you:
Are you using the standard factory firmware?
Can you please upload a few screenshots of your printing settings?
Are you using mesh bed levelling?
Welcome to the forum! I am just copying your message below so that other people can contribute and learn too:
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Hello there,
We bought an Aurora A5 model printer. With 1.75 filament and 100% flow adjustment, we were printing well using the Cura slicer program.
One day, during the printing, the power cord of the heating table was disconnected from the connection point, but the printer continued to print until we noticed the situation. The table was cold and the printed piece left the table. The rest of the press went wrong. We were using the printer on the computer with the repetier program.
We cleaned everything and wanted to go back to the press. But there was another problem. When we connected the new print, the printer was starting to print, but the nozzle was squeezing a small amount of filament. The filament is not holding onto the table. The flow level was not good.
But manually, when we extrude the filament, the nozzle smoothly flows the filament. When we went to press, filament could not flow in the desired amount.
We struggled to solve this, we changed the nozzle several times, changed the heater aluminum block, changed the nozzle heater, removed the filament pusher motor, checked and changed the gear, but we could not be successful.
We changed the slicer program we used, experimented with different computers, changed our usb memory, we could not overcome this problem.
After working around for days, we re-adjusted the filament diameter to 1.40mm and the flow rate to 150% in the Cura program. This time the printing was successful. However, we are uncomfortable with this situation.
Why are we experiencing this problem, what is the solution, please help. Thanks in advance.
=========
Wow!! It sounds like you’ve tried a lot of things, with a lot of struggle!
A few questions for you:
Are you using the standard factory firmware?
Can you please upload a few screenshots of your printing settings?
Are you using mesh bed levelling?
Post edited by Samuel Pinches on
Comments
Yes we was tried more options. So about your questions...
Yes standart factory and we was try diffrent firmwares..
Yes i can send pictures, do you want cura settings ? If yes i will send...
We are using flat glass "no factory glass" But we was tried factory glass,
1. Heat the hot-end to 230c and wait for it to reach that temperature
2. Load the filament until it comes out of the nozzle
3. Mark the filament at 120mm from the entrance of the extruder motor
4. Using the A5 menus: Click on the "Extrude" button
5. Click the length button to set to 10mm
6. Click on the speed button to set to 'Slow'
7. Click on the extrude button to extrude exactly 100mm
8. Once it is done, measure the mark on the filament to the entrance to the extuder motor
It should be between 15mm to 25mm
If its outside that range, then your extruder's steps/mm are wrong. This can be adjusted in Cura similar to what you've already done.
But it is within the 15mm to 25mm range, then there is another issue there
Let us know the results.
What DaHai was suggesting was that you test the function of each component of the printer, to verify correct function, before attempting to print. He was suggesting you verify the calibration of your extruder. Please set flow rate to 100%, and set the filament diameter to 1.75mm. Then, you can mark the filament in one place, extrude 100mm, and then measure the distance that has actually been consumed. It may be more or less than 100mm. This is an important first step to try.
The problem that occurred does not sound like a major failure, but we need to test each component to be sure.
Here are some suggested settings. If not mentioned, then please use the default settings.
layer height: 0.1mm
print speed: 30mm/s
printing temperature for PLA: 215C
build plate temperature: 65C
Line width: 0.45mm
filament diameter: 1.75mm
flow: 100%
first layer speed: 10mm/s
first layer height: 0.12mm
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