Slicing Error with Cura 12.11?

[blecheimer 9]

I wanted to print the polygon mask from Thingiverse (

http://www.thingiverse.com/thing:33505

) and sliced it with Cura 12.11. For large objects I normaly use 0.24 layer height, 0.8 wall thickness, 15% infill. You can find my profile here.

At the begining everything looked fine:

This is layer 334. You can see two walls (= 0.8mm) and the infill. But then just a few layers later...

... at layer 341 there is only one wall (= 0.4mm). This continued for another 100 layers and pretty much screwed up my print.

Has anybody an idea what happend during slicing? Why did cura change to 0.4mm wall thickness? :?:

[Daid 306]

There might be an error in the model, you could send it to cloud.netfabb to see if that changes anything in the result.

[blecheimer 9]

Thanks for the info, I will give it a try.

[blecheimer 9]

OK, tried it - but same result. There is sill the slicing error starting at layer 341.