Extruder calibration

[stephenbo 1]

What is the best way to calibration the the amount fo plastic it extruder

[CarloK 85]

You don't get a lot of response to your question since it isn't clear what you want to know.

In the Ultimaker printers you don't have to calibrate the filament flow since the variation between printers is very small.  Perhaps you think there is a problem with the filament flow and you are asking for a way to verify this?

If yes, then I don't know 'the best way', but there are a few maintenance tasks you can do:

- Clean the nozzle: https://ultimaker.com/en/resources/19510-how-to-apply-atomic-method

- Verify the feeder tension is set to the middle of the allowed range (there is a small screw on top of the feeder)

- When you had a lot of grinding recently, perhaps clean the feeder insides: https://ultimaker.com/en/resources/50688-clean-the-feeder

- Retighten the hotend insulator: https://ultimaker.com/en/resources/50677-retighten-the-hot-end-isolator

 

If all this didn't help, then on the UM2(+) you might have a problem with the hotend insulator being degraded, this happens sooner when you print at temperatures > 250C. These hot end isolator couplers are sold all over the internet