PCB Libraries Forum : Padstack Drill Tolerance https://www.PCBLibraries.com/forum/ Wed, 08 Apr 2026 12:17:27 +0000 Thu, 27 Jun 2019 07:34:02 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.07 360 https://www.PCBLibraries.com/forum/RSS_post_feed.asp?TID=2503 <![CDATA[PCB Libraries Forum]]> https://www.PCBLibraries.com/forum/forum_images/PCBLForumLogo.gif https://www.PCBLibraries.com/forum/ <![CDATA[Padstack Drill Tolerance : Altium doesn&#039;t require a...]]> https://www.PCBLibraries.com/forum/padstack-drill-tolerance_topic2503_post10314.html#10314 Author: ransonjd
Subject: 2503
Posted: 27 Jun 2019 at 7:34am

Altium doesn't require a tolerance, so I leave it unset and specify a default tolerance in my fabrication drawings for most holes. I would like if this could remain an option for Altium.]]> Thu, 27 Jun 2019 07:34:02 +0000 https://www.PCBLibraries.com/forum/padstack-drill-tolerance_topic2503_post10314.html#10314 <![CDATA[Padstack Drill Tolerance : Altium has supported drill tolerances...]]> https://www.PCBLibraries.com/forum/padstack-drill-tolerance_topic2503_post10313.html#10313 Author: ransonjd
Subject: 2503
Posted: 27 Jun 2019 at 7:31am

Altium has supported drill tolerances on holes since version 17.1 or possibly earlier. I also would appreciate this feature.


]]> Thu, 27 Jun 2019 07:31:15 +0000 https://www.PCBLibraries.com/forum/padstack-drill-tolerance_topic2503_post10313.html#10313 <![CDATA[Padstack Drill Tolerance : Default fabrication tolerance...]]> https://www.PCBLibraries.com/forum/padstack-drill-tolerance_topic2503_post10312.html#10312 Author: rrix
Subject: 2503
Posted: 26 Jun 2019 at 5:59pm

Default fabrication tolerance seems to be about 0.05 mm.  

I have some pad stacks at that setting, but my general standard is a +/- tolerance of 0.08 mm.

In Allegro, each pad stack has a positive and negative tolerance (they can even be different).



A global drill tolerance single value entry that populates the positive and negative drill tolerances each with that same number would work for about 90% of the pad stacks I'm creating, then if something else is needed, I can manually change it.
]]> Wed, 26 Jun 2019 17:59:08 +0000 https://www.PCBLibraries.com/forum/padstack-drill-tolerance_topic2503_post10312.html#10312 <![CDATA[Padstack Drill Tolerance : The key here is where do you want...]]> https://www.PCBLibraries.com/forum/padstack-drill-tolerance_topic2503_post10311.html#10311 Author: chrisa_pcb
Subject: 2503
Posted: 26 Jun 2019 at 5:04pm

The key here is where do you want the information to come from?

We have a Fabrication Tolerance setting. Is this usable as the allegro padstack tolerance setting? Or do you need something more? Are you looking for each padstack to have a tolerance, or will a global tolerance that you set(i.e. from a cell in the grid) work?]]> Wed, 26 Jun 2019 17:04:13 +0000 https://www.PCBLibraries.com/forum/padstack-drill-tolerance_topic2503_post10311.html#10311 <![CDATA[Padstack Drill Tolerance : The current version of Library...]]> https://www.PCBLibraries.com/forum/padstack-drill-tolerance_topic2503_post10305.html#10305 Author: Tom H
Subject: 2503
Posted: 25 Jun 2019 at 1:11pm

The current version of Library Expert does not have a Drill Tolerance feature. 

Mainly because only Cadence CAD tools supports that feature and all other 23 CAD tools do not. 

We'll take a look at this in future releases. 

V2019.04 is the current release. 

V2019.05 is scheduled for release the week of July 22. 

V2020 is scheduled for release before September 2 (Labor Day). At least in beta because it's a total rewrite of the UI. 

V2021 is scheduled to be released summer 2020 and will support schematic symbols and many new features as it is a 100% rewrite from scratch but will closely match the V2020 UI. 


]]> Tue, 25 Jun 2019 13:11:58 +0000 https://www.PCBLibraries.com/forum/padstack-drill-tolerance_topic2503_post10305.html#10305 <![CDATA[Padstack Drill Tolerance : Is there a way to set the default...]]> https://www.PCBLibraries.com/forum/padstack-drill-tolerance_topic2503_post10304.html#10304 Author: rrix
Subject: 2503
Posted: 25 Jun 2019 at 12:57pm

Is there a way to set the default drill +/- tolerances on the through-hole padstacks that PCB Library Expert creates for OrCAD PCB version 17.2.048?  It's defaulting to zero.]]> Tue, 25 Jun 2019 12:57:34 +0000 https://www.PCBLibraries.com/forum/padstack-drill-tolerance_topic2503_post10304.html#10304