samiyil

thanks for your interest, surface mode solve my problem, no holes. but i can not change the wall line count, I want it thicker. I think , I can not explain my problem. my problem gaps are inside blue circle (gap between parallel lines). they remains like this. I used your advices , gap between parallel lines did not change, other gaps are affected. thank you.

hello, I made .stl file with blender. it has no thickness, I mean I did not do anything to make it thicker(solidify modifier, if I do it, lots of planes occurs). So, I change "wall line count" to 2 to make it thicker. But as you see, after two planes intersect or as two planes intersect, a gap occurs and I can not fill it. maybe extra extrusion in the middle of red lines can be ok? but how? thank you.