AfTech54

THANKS! Now I think this old man understand the options to fix it and how the first layers are built.

Ok, but it seems like I have 4 initial bottom layers. Should I alter that to 1 instead or will it be one layer what so ever? As you see in the attached image, I have both "Bottom Layers" and "Initial Bottom Layers" in the settings. And what about the low height problem, could I fix that in one way or another with the Cura settings.

The height of my printed parts are 0,15-0.3 mm lower than the sketched expected height. I think I understand that it could be a difference of 0,15, but it shouldn't be more than that. Could it be adjusted in Cura or do I have to add 0,15 mm extra to the height in my sketches? I'm using Ender 3 and AddNorth's EPLA and have among others these (mm) settings in Cura: Initial Layer Height = 0,25 Layer Height = 0.15 Top Thickness = 0,6 Top Layers = 4 (complies with 4 x 0,15 = 0,6) Bottom Thickness = 0,6 Bottom Layer = 4 (complies with 4 x 0,15 = 0,6) Initial Bottom Layers = 4 (4 x 0,25 = 1.0) Isn't the bottom thickness now 1,0 + 0,6 mm or is the "Bottom Thickness" just based on the 4 x "Layer Height"? And why is it necessary to enter Thickness since it will be the product of "no. layers" x "layer height"