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Extruding/rectracting with Cura

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Hi guys, I am new to this forum and I have been using Cura with my non-ultimaker 3D printer for the last couple of weeks. I found it is far much better than repetier in terms of ease of use, slicing speed, stability and print quality. There are only two minor problems I faced :

1. How can I extrude/retract filament directly using Cura? Currently I have to use repetier to extract/rectract and then use Cura for printing.

2. The print time showed was not accurate. For example, Cura shows the print time is 8 minutes but in actual it took half an hour to print.

Hope you guys can help me with those problem, thanks a lot...


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a non-ultimaker using cura.

I suggest to manually extract/retract at the beginning before printing. i call that handpriming

cant go easier than that.

but i also missed to have that feature. i came in from replicatogG.. there was a nice controller window to access everything the printer can do.

however on a ultimaker with controller you should be still able to do this without touching any cogwheels.

but you cant move the z-plattform that way

since you have a non-ultimaker thats a problem X)

i would love to have a stable Cura implemented in Repetier as a slicer...

lets hope for the next release..


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Can't you just turn the extruder gear by hand? On the UM it's a very large gear on the back of the machine and it's so much better to do by hand than using software as you learn a lot. You get a feel for what kind of pressure is needed to push through a given temperature of filament.


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As far as speed goes...

For very small parts (smaller than 1 inch across) it's going to be way off. Cura just adds up all the segments and assumes a constant speed with infinite acceleration and deceleration.

Is it possible that your machine has a "max XY" speed that is much lower than the default cura speed?

For parts larger than 4 inches across, cura tends to be very accurate guess for the time because it travels long distances per segment and has plenty of distance to get up to full speed. For parts around 2 inches it can be off by a factor of 2X and so on.


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