How far can a 6X8 beam cantelever?

The cantilever length for a 6x8 beam depends on several factors, including the material, load conditions, and support type. Generally, for wooden beams, a common rule of thumb is to limit the cantilever length to about one-quarter of the total beam length for safe structural performance. For a 6x8 beam, this could translate to a cantilever of approximately 2 to 3 feet, but it's essential to consult a structural engineer for specific applications and load requirements.