Extruder motor feeding like hell (spinning extremly to much)

[sonarok 0]

Hi everyone,

finished ultimaker yesterday around 2:00 and and also started with my first print. Everything looked good ( first run without pla to check movement etc. )

After i inserted the PLA string the issues started, first there was no PLA extruded so i thought i need to tight up something on the feeder site, then i noticed

that the bold is eating the PLA string and get stucked, was searching alot on the net, found also this thread :

http://groups.google.com/group/ultimake ... 5bae50b9ec

but it seems like i have some other issues. (also tried to push the temp to 225C° with no success)

then i removed the presure on the feeder and tried to print a model by pushing the PLA by hand:

http://www.pic-upload.de/gal-125409/vx5nyo/1.html

think it looks quite good for a "hand feeded" print

what i noticed by this try was that i need only a very small amount of PLA so maybe only some mm / 1-2 cm of the string. But my extruder motor is spinning

like it needs to push 100 times more. Thats seems also the reason why it eats the string. (push alot more then can be extruded and eat up the string this way)

so now i'm wondering what could be the issue that the extruder motor is spining so much / fast.

Firmware: Marlin RC1

Software: netfaab (newest verion from 23/04/2012)

thanks in advanced for any help!

[Daid 306]

If you are using Marlin with NetFabb, you need to edit the startcode to include an M84 E14. See: viewtopic.php?f=9&t=479

[sonarok 0]

hi daid!

what can i say... think images tell more then words

thousend thanks! this small line and some z-level tuning warped my UM to perfect quality!