[Walls not touching infill]

Hello all,

Does anyone have an idea what is causing my walls not touching the infill? Printed in PLA on an Ultimaker2.

Could it be the tension of the belts? The small belt on the left looks sloppy. I can't find the way to tighten it.

Many thanks,

Sanne

[Prints come out twice too high]

UPDATE

We've taken a CLOSE look at the jumpers and the MS1 left pin is missing and looks like it has been broken off.

I have some pics but can't post them here.

Guess i have to contact Ultimaker and get a new board..?

[Prints come out twice too high]

great thought. i've checked, and when i move it down 50 mm it actually moves down 97 mm!

that must be it. but how to fix it?

i've checked the jumpers and am now fiddling with the pod meter of the Z stepper. no improvement until now...

[Prints come out twice too high]

I've checked, but the jumpers for the Z stepper motor are positioned correctly like in the picture.

I've started scaling all my .stl files down in the z-axis via a 3D application but it's not even exactly 50%. None of my models is printing in the right height. Could it be something skeinforge-related? Should I be posting it in that forum perhaps?

Any ideas?

[Prints come out twice too high]

So. I've managed to put my Ultimaker together and am printing some test objects now.

Am using the default settings - RepG v.0026. Skeinforge35, profile Ultimaker failsafe.

All my prints come out quite nice but twice too high. Yoda looks like conehead. 20mm cube twice too high as well. Something with my Z-axis? layer heights?

Any ideas would be much appreciated.

Thanks, Sanne.