Rat Rig Community [Unofficial]•2y ago

infill sticking up

What’s wrong with my printer/filament/settings? First layer comes up perfectly, but I have speed limited to 50mm/s for it. Speed is set to 120mm/s on the rest. I know this filament doesn’t support high speeds (Sunlu PETG, terrible choice) but is it really this causing this problem?

20 Replies

ptegler•2y ago

infill extrusion % is too low. Not enough flow for the speed. The extruded filament is breaking and curling

sunny-green•2y ago

usually i have this happen when i am exeeding the max flowrate of my hotend

compatible-crimson•2y ago

@ptegler ran the filament flow calibration around my current rate

sunny-green•2y ago

if you go to your slicer, and change the view type to flow, you can see if the infill is just significantly much higher than the rest, that would be a smoking gun as to why

compatible-crimson•2y ago

@nordern I see that, but what am I looking at here?

compatible-crimson•2y ago

(and why is this, what should I tune?) per @ptegler ‘s suggestion and the calibration I ran, I’ve set the extrusion multiplier to 1.2

sunny-green•2y ago

your infill and perimeter walls are at 11.140mm3/s i assume your walls are OK, so the problem is mostly only the infill, and i have a theory with that, which is with Gyroid & Cubic infill, since the previous layer isn't entirely supporting the next one it can detach easier, when i tested and changed to some other infill patterns the problem went away, but also when i changed the "width" of infill to 140% alternatively, you can lower the printing speed of infill aswell

sunny-green•2y ago