If your printer has a Bowden extruder, unload any filament that is loaded and disconnect the Bowden tube from the output of the extruder. Reload the filament into the extruder so that it begins to come out of the nozzle.

If your printer has a direct extruder, you may like to remove the heater block and nozzle from the feed tube. (Leave it electrically connected but tucked away where it won’t burn you or cause any damage.) This will allow you to later re-use the filament pushed through the extruder and eliminate the possibility of blockages or nozzle back pressure interfering with your calibration. Heater block removal isn’t necessary to run the calibration procedure, but be aware that you may be using a fair bit of filament, particularly if you’re making big changes to the E-step value.

Marking

To perform the calibration, we’ll be sending 100 mm of filament through the extruder. Before doing that, however, you’ll need to mark the filament at a distance of 120 mm away from the extruder’s entrance. This extra 20 mm allows measurement of over- or under-extrusion. Tell your printer to extrude 100mms of filament using the display screen. Once complete, the printer should have extruded exactly 100 mm of filament. To check this, measure from the extruder feed to the mark you made on the filament.

If the measurement is 20 mm, your extruder is properly calibrated, and you don’t need to continue following these instructions.

If your measurement is more than 20 mm, your printer is likely suffering from under-extrusion, and your steps/mm setting needs to be increased.

If your measurement is less than 20 mm, your printer is over-extruding and your steps/mm setting needs to be reduced.

The above is from an excerpt in this link as well as the pictures.

https://all3dp.com/2/extruder-calibration-calibrate-e-steps/

After following these instructions we need to put the info into the e step calculator in the link below.

https://support.th3dstudio.com/estep-calculator/

Send the command to change the gcode through ultamaker cura when your printer is connected to your computer via a cable.

If your printer has eeprom send the M500 command over the cord that is connected to your printer and your computer using ultamaker cura.

how to calculate e steps