Using PETG as Support/raf tinterface prints bad

[Falkenberg3D]

I´m designing modelhouses for modelrailway and i print them on the P1S.
I hate to fiddle too much and im also not so good at it as well

As seen on the picture a roof for a building, it makes lines in the same printlayer, where i use PETG as support/interface, and after the last support in the top, the print also gets more “blank”. I did try to slow the print speed but it didnt help.

Hope that the comunity can help.
Regards Martin

[johnfcooley]

support interface should be 0.

[Falkenberg3D]

No doesnt work. But just realised that if i set top or buttom interface layers to Zero then it works… but if im right then there will be no support or… ill test that

[Falkenberg3D]

I was right. If i set the interface layers to zero no support with PETG…