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SOLVED Change outside pcb dims from Gerber file ? .BRD need help

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Overspeed:
Hello

I have a set of gerber files for single and twin AD8221 amplifier , but the original outside PCB shape is really small / narrow .

Does it is possible to increase the outside dims from a gerber file ( to 50x50mm) ? I have tried with Dimtrace but that generate an mystery offset between the new outside shape and the oldest one?

I have also the .brd file but I have not EAGLE , I link the .brd I have

Regards
OS

 

Kean:
I don't understand the problem.  Can you try explain better, or show us a picture?

Attached is what I see when opened in Eagle.

Kean:
Ah, maybe this is what you want... I changed the dimensions to a 30mm square.  50mm is possible, but a lot of empty space.

Kean:
Just for reference if anyone else is interested, this is the design

https://github.com/HMS-RIC/EMG-EEG-Amplifier

Doctorandus_P:
It looks like a complete eagle project, with both a schematic and a PCB file.
If you don't have eagle anymore, the eagle importer for KiCad works quite good.

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