Hi,
Sometimes, I have problems with consistent printing. Please look at the pictures in my gallery: http://umforum.ultimaker.com/index.php?/gallery/image/8224-p8226609/
(I don't know how I can link them in the post. The forum technique is a bit weird ...)
At a certain height, I get with different materials* often, but not everytime, strange printing errors. I have experienced something similar beforehand, where I changed the overall wall thickness. (e.g. from 2 mm to 1,5 mm) But now, I don't know why this occurs. I've checked the CAD file and there is nothing. This also counts for the G-Code (but I will show you the Code happily tomorrow).
The problem is, I want to use the model afterwards with some force, but you can see in one of the three pics, that one model is ripped right through the problematic area. It happend the moment, I wanted to take it from the buildplate.
Do you know what this is and how I can get rid of it?
* ø1,75 mm PLA (don't know witch manufactor)) and ø2,85 mm colorfabb sky blue
Best Wishes
gr5 edit - added below images: