Overhangs are where you’re printing a slanted surface without any support beneath. This is asking quite a lot of your printing, especially if you’re thinking of exceeding the 45° rule.
Also see our article [How to print overhangs, bridges and exceeding the 45° rule].
Signs of stringy and droopy overhangs:
Your overhangs should appear as smooth as the rest of your print if set up correctly. If they are looking more like the image shown, you’re experiencing droopy overhangs.
Explanation:
Stringy prints or droopy overhangs are usually a result of printing too hot or insufficient cooling. In a way overhangs are even worse to print than bridges. As bridges have a supported start and landing zone. The overhang doesn’t, it just clings to the neighbouring line.
How to fix:
Reduce your printing temperature in 5°C increments until your overhangs are smooth.
Increasing cooling (fan speed). If you’re already at 100%, you can ensure all chamber doors are open or add external fans to beside the printer. May not be suitable for all materials, check with the manufacturer/seller.
Tell your slicer to print the inner perimeters first before printing the outlines.
If you design your model yourself, avoid overhangs at an angle greater than 45°.
If the overhang cannot be avoided, consider using supports to hold them up.
Check your extrusion settings. Do the basic extrusion calibration of extruder steps/mm and extrusion multiplier.