Anothe problem in here. I am printing a part with a 0.5mm slit - a narrow gap between 2 printed sides.
In fact, when I slice and print this at 0.4mm nozzle, the gap is closed up and the part is useless.
In order to get the filament visualisation to show this gap closure I must set width over thickness to be 9.
OK - so now it looks like the actual print, but a more fundamental problem is - how do I configure the slice to preserve the gap? I have changed trhe gap width in the part design to 0.7 but the printed part still has the gap closed up. How do I preserve this gap?