Ah! thank you gr5!
Ok, now I'm getting numbers closer to what was expected, I needed to change the esteps (down to 279 from 282). Thank you again gr5!
To clarify my process for other who made my mistake:
so i'm trying to calibrate my ultimaker 2 feeder but i don't know how to find and change my e-step, plus i'm only able to use my cura app to send g-code (when i tried pronterface and octoprinter, i managed to connect my printer to the app but as soon as i wanted to do anything it would say Error printer not connected)
Either do it a lot slower, or do it with no load (not inserted all the way to the nozzle).
That way you should get more consistent results.
It should take, I'm not sure, but maybe a whole minute to extrude 30mm through a hot nozzle. Maybe 3 minutes.
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