Importing dwg/dxf Files

CET Designer allows you to import CAD-files with the file formats dwg or dxf.


The CAD (dwg/dxf) dialog icon on the Tools component tab.


Import a drawing

Follow the steps below to import a dwg/dxf drawing:

  1. Select Import CAD (dwg/dxf) drawing from the File menu, alternatively click the CAD (dwg/dxf) dialog icon on the Tools component tab.
  2. Click the Import new button. An Open dialog appears.
  3. Locate the file you are looking for. Select the file name and click Open.
  4. Go to the CAD (dwg/dxf) properties tab and to the CAD (dwg/dxf) layers tab and make desired settings.
  5. If you wish to preview the drawing with the applied settings, click the Apply button. A tip is to deselect the Show in 3D view check box.
  6. Click OK.


The top part of the CAD (dwg/dsf) dialog.


  • Click the Reload button if you have made any modification in a CAD file that you have loaded and would like to reload (# 3 in the image above).
  • If you would like to remove a file that you have loaded, click the arrow to the right of the field where the file name is. Select the file and click the Remove button (# 4 in the image above).
  • CET Designer supports the import of dwg files with Xref.


Settings when importing a dwg/dxf file

The CAD (dwg/dxf) dialog consists of two tabs: CAD (dwg/dxf) properties and CAD (dwg/dxf) layers.

The CAD (dwg/dxf) properties tab is divided into four fields:

  • File: Here you load your CAD drawing (see description above).
  • File information: Here you see detailed information about the loaded file. If you have loaded more than one file, the information is about the file that is selected in the filed at the top of the dialog box.
  • Scale and unit: Select the original drawing scale by using one of the buttons or by entering a value in the text box to the right. Finally, choose the geometrical unit that was used for the original drawing. The actual scale and dimensions are calculated and shown below.
  • Properties: Determine where you would like the imported dwg/dxf drawing to be displayed in CET Designer, in the 2D and/or in the 3D view.

You also have the option to make further settings by clicking the Advanced settings button.


The Cad (dwg/dxf) Properties dialog.


Advanced import settings

If you wish to have more control of the 2D and 3D presentation of the imported dwg/dxf drawing in CET Designer, click the Advanced settings button in the bottom-left corner of the dialog box Cad (dwg/dxf) Properties.

Under the heading Cad dwg/dxf options, the following advanced settings are available for:

A.  2D presentation:

  • Show only outline of meshes – displays a simple outline of the drawing in the 2D view.
  • Show full mesh grid – displays a detailed drawing with full mesh grid information in the 2D view.

B.  3D presentation:

  • Calculate vertex normal – smooths out the rough-edged appearance of a multifaceted surface. CET Designer calculates the surface normally and blends the colors across two or more adjacent faces. The break angle is the angle at which CET Designer interprets an edge. The default is 45 degrees. Angles greater than 45 degrees are considered edges. Angles less than 45 degrees are smoothed. To define an edge as less than 45 degrees, reduce the smoothing angle.
  • Displays non renderable entities (arcs, lines etc. ) – displays non renderable entities as thin cylinders. In the 3D view, CET Designer displays all drawing information as rendered. However, simple lines, arcs and polylines etc. are so called non renderable entities, which means that they are not shown in the 3D view. Selecting this option will display them as thin cylinder lines.


The Cad (dwg/dxf) Properties dialog, Advanced properties.


Inserting a CAD (dwg/dxf) zero point

The CAD (dwg/dxf) zero point tool is used when importing or exporting to CAD (dwg/dxf). Before importing a cad-file a zero point ought to be inserted in the drawing area. A zero point is an insertion point that determines a drawing’s position in the drawing area. It is possible, but not recommended, to both import and export without the use of a zero point.


CAD (dwg/dxf) zero point tool.

To insert a zero point, follow these steps:

  1. Go to the Tools component tab.
  2. Under CAD (dwg/dxf) Tools, select the CAD (dwg/dxf) zero point and click it into position in the 2D or the 3D view. The zero point snaps to all components in the drawing by default. To override this behavior, press and hold theShift key while placing the zero point.

  • It is possible to place multiple zero points in the drawing area in CET Designer, but only one can be active (selected) at a time. Simply click the zero point to activate it.

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