Gradual overextrusion
I am getting a problem where the print is gradually developing an overextrusion the higher it goes. It is the most severe towards the center of the bed and it's most prominent when printing Prusament PC-CF
7 Replies
extended-salmon•12mo ago
What EM are you using?
0.92. Any lower then the early layers will underextrude
extended-salmon•12mo ago
Sounds about right. I print at 0.9
You mentioned its worse at the center of the bed. How does your bed mesh look like? The bed mesh compensation gradually decreases as the build progresses. In severe cases this could lead to such issues, layers decreasing height with reduction of the mesh compensation.
That's something new to know about. I thought the mesh compensation is the same bottom to top, didn't know it gradually decreases when Z gets taller
extended-salmon•12mo ago
with such low bed mesh values i would rule that mentioned effect out.
Did you leave your printer time to settle thermally before starting the print?
You can search for bimetallic effect or gantry bowing in the Discord to find out more about this topic.
I usually bake my gantry with the bed set at the print temperature for an hour before print