Working with Backdrilling in Allegro PCB Designer: Best Practices
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Tool Tip – Adjust some of the values under the Padstack Parameters tab, and when
Backdrill is executed, the padstacks, without pre-existing backdrill data, will be updated.
Important Note:
• Only padstacks which do not have any backdrill data will be updated using the
Padstack Parameters. All other padstacks with user-defined backdrill data
entered in the design or in the library will remain unchanged.
• It is recommended to enter the backdrill data in the library padstacks to ensure a
consistent result when backdrill is executed from design to design.
