Odd Mounting Hole
Printed From: PCB Libraries Forum
Category: Libraries
Forum Name: Allegro
Forum Description:
URL: https://www.PCBLibraries.com/forum/forum_posts.asp?TID=496
Printed Date: 31 Oct 2025 at 12:24am
Topic: Odd Mounting Hole
Posted By: budnoel
Subject: Odd Mounting Hole
Date Posted: 10 Aug 2012 at 6:59am
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Hello - I need to create a mounting hole for a pin that requires two PTH's, a smaller one within the pad of a larger one. I attempted to create a symbol using two padstacks and when I placed the second one I created a DRC error due to the overlapping of the two pads. Anyone have any suggestions for how to create this symbol? I've included a small section of the mfr dwg. to illustrate the issue. Thanks in advance for any help. 
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Replies:
Posted By: rdl86626
Date Posted: 14 Aug 2012 at 7:37am
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Notes 3 and 4 are missing. Maybe use 1 padstack and a fill for the other. Do you have a pic of it? Rick
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Posted By: budnoel
Date Posted: 14 Aug 2012 at 9:04am
| Note 4 indicates that there is a pad on top and bottom of pcb but it doesn't give the size. Note 3 indicates what the angle of rotation for location of the second hole. I created a 10.02 pad with a 5.15 hole for the first padstack and made it a pin. The second smaller hole I simply created a 2.55 diam hole and placed it accordingly. That seemed to work. Thanks for the response. |
Posted By: Naveed Khan
Date Posted: 13 Mar 2013 at 2:17am
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FP for same I have created pad over pad. uploads/3054/Fp.jpg" rel="nofollow - Fp.jpg |