Line Tool

The line is one of the most important tools in CATIA, both in and out of the sketch workbench. Lines can be used to construct planes, shafts, guides for multi-section solids and so on. Here you are shown how to construct a stand-alone line which is not part of a sketch. The line tool is located in the ‘Reference Elements (extended)’ tool bar, and looks like this;

Line Tool 1

After pressing the line tool, this dialogue box will appear;

Line Tool 2

Here you can create a line using various options, which are;

  • Point – Point
  • Point – Direction
  • Angle/Normal to curve
  • Tangent to curve
  • Normal to surface
  • Bisecting

Each method of creating a line needs specific geometrical features for it to work. On the bottom left of the screen there will be a text prompt telling you what the next step is; this is very useful in helping to select the next element, depending on the line type you are making.

Line Tool 3


Point – Point Line Example:

Firstly, you will need to have created 2 points in CATIA. If you don’t know how to do so, look at the point tool tutorial first.

Line Tool 4

After the points have been created, select the line tool. The same dialogue box will appear, and on the dropdown select the Line type as ‘Point – Point’. Then select the points you created as Points 1 & 2.

Line Tool 5

There is an option called “support” after this, which refers to a surface that the line could follow if a specific profile is required. If a straight line is required, then this option can be ignored. ‘Start’ and ‘End’ refers to where the start and end points are; the ‘Up-to’ option enables a piece of geometry to be used to limit the line length. To adjust the length manually, use the green arrows by ‘Start’ or ‘Finish’. You can also change the length type to make it infinitely long, which may be required for reference geometry.

When you click ok, the line will appear as so. Try out the other types of lines, and see how they differ in construction with each other.

Line Tool 6

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