PETG: distorted walls
Hello!
I have no idea what you call this, so I just call this distortion..
The below object is supposed to have straight angled walls, but they end up having a convex curve at the bottom, and slightly noticeable concave at the top.
What makes this, and what can I do to stop it?
I am printing Prusa filament at 240degrees. I can upload gcode or settings if that can help
RE: PETG: distorted walls
I can upload gcode or settings if that can help
That would be helpful. Don't bother with gcode. Instead upload a zipped 3mf project file saved from PrusaSlicer, which will contain the STL and all your settings.
RE: PETG: distorted walls
Just looking at the slicer preview layer by layer, the thickness of the vertical walls appears to change from bottom to top as you can see the slicer fill in the space between the two outer perimeters first with gap infill, then inner perimeter(s), then a combination. Unless something more sinister is going on, this could explain the variations you're seeing. I hope @swiss_cheese sees this thread as he's the Master of Extrusion Width Manipulation and always has outstanding suggestions for optimizing problematic prints. Basically you'd use height range modifiers and adjust your perimeter extrusion width along the z-axis of the model.