Detailed Drawings > Defining the Drawing Layout > Showing Model Grids > Considerations When Using the 3D Model Grid
  
Considerations When Using the 3D Model Grid
When using the 3D model grid, keep in mind the following:
If you reorient a view with a grid, the system may erase the grid from the display. Therefore, before completing the procedure, you must confirm that you want to reorient the view.
When you change the view scale, the model grid adjusts to cover the entire view.
The system extends the grid lines beyond a drawing view outline at a distance that equals two default grid spaces. It uses the default grid when the model grid first appears. You can modify it later, but the extension distance does not change.