Working with IDF
Best Practices: Working with IDF
October 2019 19 Product Version 17.4-2019
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Creating Chamfers
Chamfers made in corners (perpendicular to the primary side of the board) translate as
typical geometry when exported to ECAD formats. Chamfers that are in any other direction
do not translate cleanly. You must suppress this geometry before exporting to ECAD so that
Allegro PCB Editor can read the entire exterior profile of the board. See Figures 1-10 and 1-
11.
Figure 1-10 shows two types of chamfers in this model. Notched chamfers are shown in the
upper corners, and a slanted chamfer for finger connectors at the bottom edge, shown as the
horizontal line .25" from the bottom.
Figure 1-10 Chamfers
Figure 1-11 shows the imported ECAD file. The notched edges translated correctly, but the
edge chamfer along the bottom was cut back to the edge where the chamfer returned to the
original board height. The chamfer is ignored during the import process.
