Tells you: How far your printer can go without supports.
This isn't in Bambu Studio either: download a model that tests angles and bridges separately (not an “all in one”, which mixes problems). · It works the same on any FDM printer. The menu is Bambu Studio's; Orca Slicer has a very similar one, and in other slicers you print the same test with a downloadable model. Can't see the menu?
How
How to read it
See at what angle the wall starts to droop and at what length the bridge sags. That angle tells you where to set the support threshold.
What you read on the piece
A face at 60° from vertical makes 30° with the horizontal. With that “Threshold angle”, flatter faces get support.
Where the value goes: Process › Support › Threshold angle; for bridges, Process › Speed › Bridge.
Helps with:Overhangs droop or look rough underneathBridges sag
Threshold angleSlow down for overhangBridge speedThick bridgesFan speed for overhangs