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Issue drawing geometry exactly at wanted coordinates on PCB

Message 1 of 3
144 Views, 2 Replies

Issue drawing geometry exactly at wanted coordinates on PCB



I'm designing a PCB which outline has some slots with radious. Board has antennas which need to be drawn exactly at correct coordinates, and I bumped into quite annoying issue while trying to do this.


Attached is a simple video showing the issue. If the board has rectangular shape, I can draw a circle exactly at my marker location without any issues. But if I modify the board outline to include a slot with radious, after this I cannot anymore draw the circle exactly at location I want. It allways jumps sligthly off from the point I want the center to be. Same issue happens with other geometries for instance when tying to make polygon for copper pour.


Is there something I could do to avoid the issue. Only workout I could imagine is to first do the layout on rectangular board and then finally modify the board outline to be correct, but this would be very awkward from process flow point of view.



Message 2 of 3
in reply to: saku.lahti

Hi @saku.lahti,


Thank you so much for providing the video. It almost seems as if the inferencing turns off.


@HelenChen-ElectronicsQA @panpan_fan This looks like it could be painful issue for customers to run into. Could you see if you can duplicate it?

@yqliu Do you think the push from 3D back to 2D could affect the inferencing in some way?


Best Regards,

Jorge Garcia
​Product Support Specialist for Fusion 360 and EAGLE

Kudos are much appreciated if the information I have shared is helpful to you and/or others.

Did this resolve your issue? Please accept it "As a Solution" so others may benefit from it.
Message 3 of 3

Hi @saku.lahti , 


Sorry for any inconvenience.

Unfortunately, we are not able to reproduce this issue by ourselves so far yet...

Could you please try to restore defaults for the Fusion Preferences and then try the same steps again to see whether it helps or not?


Looking forward to your feedback.

Best regards,



Helen Chen
Principle QA for Fusion 360 Electronics

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