Sketcher External/it

Description
This tool overlaps a line (curve or segment) not belonging to the sketch in progress, but belonging to the support face, with a new  magenta line and imparts it the ability to be placed in relation to a sketch element running.

Is useful for creating constraints such symmetries, parallels, etc.., between sketch elements and supporting face elements.

Can be used lines of all objects created with the same sketch, that are on the sketch plane in progress, even if they have product separate forms.

After creating the external geometry lines, for work in a cleaner environment, you can hide the object on which they are based.



Use

 * Start a sketch to the previously selected face of a solid.
 * Activate the tool External Geometry.
 * Select, on the object existing, the line (segment or curve) that you will use.

In the sketch appears a new magenta line.

External Geometry can be used in a similar way to a Contruction line, for example to produce symmetries or parallels.

Example
The magenta lines are External Geometry selected on two objects of the same extrusion products with previous sketch. In this case they are used to create the constraints of tangency with the circumferences. The line on the smaller rectangle is not used. The active sketch with the basic forms hidden and external geometries visible.

When the sketch is closed, External Geometry lines are not visible.