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Gap between outline and infill and imperfect circles

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Hei everyone!

I'm messing around with gaps between infill and outline. Furthermore, the front right corner of the circles is a bit wider than the front left one.



Obviously, this seems to be something belt tension related (propably on the y axis). So I increased the tension a couple of times. I'm using these http://www.thingiverse.com/thing:19892 and these http://www.thingiverse.com/thing:17058. With the later ones I either use the 2mm or 3mm things. I'm wondering whether this is a bit too much for my brand new machine. But either way, the belt tension should be fine, with all long and short ones. The pulleys have been double checked as well.

Additionally, I've checked what owen suggests here http://forum.ultimaker.com/viewtopic.php?f=7&t=727. But 100mm in the .stl-file is precisely 100mm in my print.

Nothing helped so far. I've printed the thing pictured above (which is the bolt cap of a nice z-axis adjuster http://www.thingiverse.com/thing:19912) quite often with different belt tensions, but it seems to look identically each time.

Does someone have an idea for me?

Thank you!


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Try to confirm that the stepper motor drive belts (attached to stepper gears) for the Y and X are close or the same in tension. I had a similar problem and my (y) stepper actually moved from it's original location. It drifted up just a few mm and that was enough to give the belt slack which to the best of my knowledge gives you what you have in the picture.

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