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Generate pads with different drill symbol

Printed From: PCB Libraries Forum
Category: PCB Footprint Expert
Forum Name: Questions & Answers
Forum Description: issues and technical support
URL: https://www.PCBLibraries.com/forum/forum_posts.asp?TID=3319
Printed Date: 17 Oct 2024 at 2:55pm


Topic: Generate pads with different drill symbol
Posted By: c.utrera
Subject: Generate pads with different drill symbol
Date Posted: 18 Sep 2023 at 8:40am
Hi,

I am trying to generate 3 different footprints and I would like to have different drill symbols for each one of the drills since the pads generated have different diameters. I do not see in the pad stack tool a way to define this drill symbol. Is there any way to change it? 

We translate the footprints using Cadence Allegro Design Systems Translator and we would like to have the drill symbols different in order to have them in our drill chart to visually check the different drills.

Also, every time we generate the pads we used to define a drill tolerance. In the padstack I do not see any way to add it.

Thanks


Replies:
Posted By: Tom H
Date Posted: 18 Sep 2023 at 8:44am
Drill Symbols and Tolerances are not defined in Footprint Expert. 

They are defined in the CAD tool. 

You can adjust the Hole Size Round-off. The default round-off is set in Options at 0.05 but you can change it to whatever value you want. 



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Posted By: jgregoire
Date Posted: 02 Jan 2024 at 7:44am
Best practice in OrCAD/Allegro is to regenerate drill symbols per design, just before placing your drill table.

Manufacture -> Customize Drill Table -> Auto Generate Symbols

It will automatically group pads with the same drill size together and assign the same symbol.


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