How do you make a joint in Fusion 360?

What is as built joint?

The As-Built Joint command creates a joint to position components relative to one another and defines the relative motion in Fusion 360. Components maintain their current position. Design > Solid > Assemble > As-Built Joint.

When adding draft to an extrude during feature creation What is the name of the feature parameter?

Use the Draft angle parameter to change the draft of an extruded feature.