Arcs must share the same center point and radius.Lines that are not co-linear, without space between them, are joined to a PolyLine.You can join Lines that are co-linear, in which case the farthest end points remain and a new line connects them. Lines must be aligned in one direction.Use these guidelines when welding entities: You can also transform Arcs to Circles and elliptical Arcs to Ellipses. You can merge Lines, open PolyLines, Arcs, elliptical Arcs, or open Splines. Use the Weld command to merge two entities into one. Īnother method would be to convert the lines to a continuous polyline using either the WELD or JOIN command. You can also create Regions with the AreaBoundary command by setting the resulting entity type for boundaries to Region. You must apply the Hatch to the Region entity again. If the source entities of the Region are hatched, the Hatch loses associativity to the boundary. If you set ShadeView mode to Flat, you will see that the Region is a surface, not simply a boundary contour. This information is lost when you create a region from such entities.Ī Region is a planar solid entity. You can use the command to combine all entities of any closed loop – such as closed PolyLines (including polygons and Rings), Circles, Ellipses, and closed Splines – into one entity.Īfter creating a Region, there is little visual difference on screen except when the original entity had a width, thickness, or LineWeight. The Region command transforms an entity that forms a closed shape into a 2D Region entity. To use it for the EXTRUDE command you will need to convert the lines into a Polyline or into a 2D Region entity. The Polyline sketch is a single region while the Line sketch is 5 separate entities. It will look like this when all of the lines are selected. If you draw the shape using the LINE tool. This is what the Polyline contour looks like when a single line is selected By using the Polyline tool a closed contour of continuous lines will be created. Then create the shape in DraftSight using the Polyline tool. I will start with a simple shape from the SOLIDWORKS Essentials Training Exercises. Use the Extrude command to create 3D solids or 3D surfaces.” “The Extrude command creates solid primitives by extruding closed 2D entities such as PolyLines, Circles, Ellipses, and Regions. To create a solid from a contour you will need to use the EXTRUDE Command. I want to continue that demonstration by showing you how to use sketched contours to create 3D extrusions. In my last blog – Introduction to Basic 3D Shapes in DraftSight – I demonstrated the methods for creating the basic 3D shapes using DraftSight Premium or DraftSight Enterprise Plus.
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