Quality
Overhang
Also known as: voladizo · overhang · saliente · angulo de voladizo · regla de los 45 grados
Short definition
An overhang is the part of a model that juts out with nothing beneath to support it, measured as the angle from vertical.
Full definition
The 45-degree rule of thumb says that up to that angle each layer rests enough on the one below; beyond it, material hangs too far in the air and droops. It is not an exact physical law: it depends on cooling, layer height, speed and material. PLA with a good fan can go past 55 degrees without supports, while ABS without cooling fails before 45. The cheapest fix is almost never adding supports but rotating the part: changing orientation often removes the problem overhangs entirely.
Related terms
- SupportsSupports are temporary structures the slicer adds under overhangs so material is not printed into thin air, and which are removed once the print is done.
- BridgingBridging is the printer's ability to lay material across a gap between two supports, with nothing underneath, and have it come out straight.
- Layer heightLayer height is the vertical thickness of each deposited band of material, and it is the setting that most affects visible quality and print time at the same time.
Quality
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