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How to prime extruder after heated bed and firmware upgrade

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After mounting the heated bed upgrade on Ultimaker Original, upgrading to Cura 15.04.2 and installing the new firmware I noticed changes in the menu on the Controller. Moving de X, Y Z-axis changed (but that is OK) but the possibility to Extrude (prime extruder, e.g. after replacing a fillament) has vanished.

Can someone help i.e. explain how to prime / purge the extruder.

Thanks in advance

Edited by Guest

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On the Original the easiest way is to do this by hand (I have this printer for 3 years and never used the controller for that, never noticed is was there...)

Do the 'preheat PLA' (or ABS) in the Ulticontroller and wait for the temp. to reach around 200 degrees. Than you manually turn the wheel on the back were you load the filament and turn it gently in the direction of the arrow. The resistance you feel must correspond with the flow of the filament that you can see. Do this before every print you start and if your bed leveling is good, your print will start perfect. Also great for changing colors.

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