{"id":177041,"date":"2022-04-26T18:04:23","date_gmt":"2022-04-26T22:04:23","guid":{"rendered":"https:\/\/www.cati.com\/?p=177041"},"modified":"2022-04-26T18:04:23","modified_gmt":"2022-04-26T22:04:23","slug":"using-sketched-contours-to-create-3d-extrusions-in-draftsight","status":"publish","type":"post","link":"https:\/\/www.cati.com\/?p=177041","title":{"rendered":"Using Sketched Contours to Create 3D Extrusions in DraftSight"},"content":{"rendered":"

In my last blog \u2013 Introduction to Basic 3D Shapes in DraftSight<\/a> \u2013 I demonstrated the methods for creating the basic 3D shapes using DraftSight Premium or DraftSight Enterprise Plus. I want to continue that demonstration by showing you how to use sketched contours to create 3D extrusions.<\/p>\n

To create a solid from a contour you will need to use the EXTRUDE<\/strong> Command.<\/p>\n

From the DraftSight Help:<\/p>\n

\u201cThe Extrude command creates solid primitives by extruding closed 2D entities such as PolyLines, Circles, Ellipses, and Regions.
\nUse the Extrude command to create 3D solids or 3D surfaces.\u201d<\/em><\/p><\/blockquote>\n

I will start with a simple shape from the SOLIDWORKS Essentials Training Exercises.<\/p>\n

\"A<\/p>\n

Then create the shape in DraftSight<\/a> using the Polyline<\/strong> tool. By using the Polyline<\/strong> tool a closed contour of continuous lines will be created.<\/p>\n

\"A<\/p>\n

This is what the Polyline contour looks like when a single line is selected<\/p>\n

If you draw the shape using the LINE<\/strong> tool. It will look like this when all of the lines are selected.<\/p>\n

\"A<\/p>\n

The Polyline sketch is a single region while the Line sketch is 5 separate entities. To use it for the EXTRUDE<\/strong> command you will need to convert the lines into a Polyline or into a 2D Region entity.<\/p>\n

From the DraftSight Help:<\/p>\n

Creating\u00a0Regions<\/em><\/a><\/p>\n

The\u00a0<\/em>Region<\/em><\/strong>\u00a0command transforms an entity that forms a closed shape into a 2D\u00a0Region\u00a0entity. You can use the command to combine all entities of any closed loop \u2013 such as closed PolyLines (including polygons and Rings), Circles, Ellipses, and closed Splines \u2013 into one entity.<\/em><\/p>\n

After creating a\u00a0Region, there is little visual difference on screen except when the original entity had a width, thickness, or LineWeight. This information is lost when you create a\u00a0region\u00a0from such entities.<\/em><\/p>\n

A\u00a0Region\u00a0is a planar solid entity. If you set\u00a0ShadeView<\/a>\u00a0mode to\u00a0<\/em>Flat<\/em><\/strong>, you will see that the\u00a0Region\u00a0is a surface, not simply a boundary contour.<\/em><\/p>\n

If the source entities of the\u00a0Region\u00a0are hatched, the Hatch loses associativity to the boundary. You must apply the Hatch to the\u00a0Region\u00a0entity again.<\/em><\/p>\n

You can also create\u00a0Regions with the\u00a0AreaBoundary<\/a>\u00a0command by setting the resulting entity type for boundaries to\u00a0<\/em>Region<\/em><\/strong>.<\/em><\/p><\/blockquote>\n

Another method would be to convert the lines to a continuous polyline using either the WELD<\/strong> or JOIN<\/strong> command.<\/p>\n

From the DraftSight Help:<\/p>\n

Welding Entities<\/em><\/a><\/p>\n

Use the\u00a0<\/em>Weld<\/em><\/strong>\u00a0command to merge two entities into one. You can merge Lines, open PolyLines, Arcs, elliptical Arcs, or open Splines. You can also transform Arcs to Circles and elliptical Arcs to Ellipses.<\/em><\/p>\n

Use these guidelines when\u00a0welding entities:<\/em><\/p><\/blockquote>\n