Snap Modes > Edge (Extra Menu)

The snap modes determine which type of point should be used as a snapping reference. There are various snap modes, some of which can be used together. The snap modes take effect when snapping is active. Snapping can be turned on or off using the F6 Key or the first button in the Panel. It can be temporarily (de)activated during point entry using the SHIFT key.

With this snap mode points can be placed exactly on the edge of an object. If snapping and this snap mode are active, instead of entering a point an object is identified on whose edge a point is placed.

Any part object in an existing object can be identified as a reference object. This can be the side of a rectangle, the arc of an ellipse segment or a circle arc within a surface.

The position at which the (part) object was identified (the "ID point") affects the rest of the command. It determines the position from which the perpendicular should be dropped onto the object (see below).

After choosing the (part) object, a perpendicular is dropped from the ID point to the selected object. A snapping reference point is inserted where the perpendicular touches the object (see graphic).

Optionally, this snap mode can be turned on or off by left-clicking the button in the panel shown above. In addition the button always shows the snap mode's current status.