2. MODELING

CHAPTER 2 "MODELLING" 30 4.1.2 Outer Limit Instruction to set the Outer Limit of the surface. OBSERVATION: If there is no grid, the dialog box for defining the grid as previously described opens. If there is a defined grid, it is used as described below. To define the outer boundary of the surface grid, after selecting the command, you create an outline by left-clicking successively on the points that are the vertices of the outline and using the osnaps. You complete the command by pointing as the last point, the point with which you started, or simply move the mouse closer to the starting point and press the right key. If you want to delete an external boundary, you must delete the corresponding grid group that you have created. 4.1.3 Holes Command to specify contour contingency contours of holes on the grid surface. Call the command and define the contour of the hole, as for the outer boundary. OBSERVATION: The definition of the holes can be done afterwards, after the surface grid has been created. Using the "Calculate" command, which will be explained below, the surface grid is recalculated taking into account the hole.