here is another photo of a house model
the problem is the same: all flat surface is full of gaps only the first layer is ok .
settings are:
layer height:0,2
shell thickness 0,8
bottom/ top thickness: 0,6
fill density: 23
print speed 55
nozzle size :0.4
temp : 210 or 230 ( it was 2 weeks ago, nowdays i set temp 230-235 manually
(the temp is stable during printing,)
can the changing of the nozzle( or anything else ) help?