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Some polygon pours do not fill during CAM export

17 REPLIES 17
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Message 1 of 18
vicgdmQVSSJ
735 Views, 17 Replies

Some polygon pours do not fill during CAM export

I have several polygons on layers Top and Bottom for my copper pours. I configure the ranks properly so that the polygons are filled within polygons. Everything renders well in Fusion and there are no airwires. 

pcb2.png

 

pcb.png

However, when I export it using the CAM processor and view the gerber files, some of the polygon pours disappear completely. I have verified this using several gerber viewers and they all return the same result. 

 

gerber2.png

 

gerber.png

I tried using the default .cam file instead of the one my manufacturer had recommended, but the result was the same. Strangely enough, some other copper pours fill, but these specifically don't.

 

It may be a coincidence, but these polygon pours have non-default net classes. However, changing them back to the default net class and generating the gerber again didn't solve the issue. 

17 REPLIES 17
Message 2 of 18
vicgdmQVSSJ
in reply to: vicgdmQVSSJ

I have tried a clean reinstall of Fusion and the problem persists. 

Furthermore, I have verified that it is not an issue with my design. I had successfully exported a Gerber from my previous design in February. But when I try to generate a new Gerber from that design now, some polygon pours are also missing. Hence, it is possible that the March update introduced this problem. 

Message 3 of 18

Hi @vicgdmQVSSJ ,

 

thank you for your post and I am sorry that there seem to be a problem with polygon pours. It's hard to say what's going on there without having the file. Would it be possible to send me your board file so that I could look into it? If yes, please to me directly by Email: richard.hammerl @ autodesk. com   (without the spaces 😉)

 

Thank you,

Richard Hammerl

Autodesk
Message 4 of 18

Hi @vicgdmQVSSJ ,

 

thank you for sending the files.  Checking......... 

 

Regards,

Richard Hammerl

Autodesk
Message 5 of 18
tschneemann
in reply to: vicgdmQVSSJ

Hello Richard,  and 'thank god' to finally have found this thread.

 

I ran into the same issue today, and searched the entire internet in the hope to find a solution (literally, with whichever keywords imaginable), with no success.

 

It seems all nested copper pours remain unfilled in a gerber viewer. (tried GerberLogix, gerbv, and the online viewer on jlcpcb).

 

This only seems to happen when the pour is nested, attached two screenshots from testing.

 

Same like vicgdmQVSSJ, it pours/renders properly in Fusion in the board file, the 3DPCB, and CAM Preview.

 

Thank you and with best regards,

Timo

 

 

 

Message 6 of 18

I just run into the same issue. The board view and even the gerber preview are correct, but in the generated gerber data, the nested polygon is missing ...

Message 7 of 18
vicgdmQVSSJ
in reply to: vicgdmQVSSJ

I tried using another computer, with the same .brd file. 

Gerber generated using Fusion 360 yields the same problems. 

However, gerber generated using EAGLE 9.6.2 yields no problems!

Message 8 of 18
jorge_garcia2
in reply to: vicgdmQVSSJ

Hi Everyone,

 

Just an update, our developers are working on this issue and we hope to have some sort of solution soon.

 

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 9 of 18

Hello @tschneemann 

 

we are working on a fix right now. For a better understanding and a accurate fix it would be very helpful to have some more data we could evaluate. Would it be possible to share your board file with me?

If you would like to share it with me, please send it directly to my email:  richard.hammerl @ autodesk. com    (without spaces).  

Your help is greatly appreciated. 

Thank you and regards, 

Richard Hammerl

Autodesk
Message 10 of 18

Hi Florian,  @florian.keckU9W2V 

 

we are working on a fix right now. For a better understanding and an accurate fix it would be very helpful to have some more data we could evaluate. Would it be possible to share your board file with me?

If you would like to share it with me, please send it directly to my email:  richard.hammerl @ autodesk. com    (without spaces).  

 

Your help is greatly appreciated. 

Thank you and regards, 

Richard Hammerl

Autodesk
Message 11 of 18
a_tekautz
in reply to: vicgdmQVSSJ

Hello Richard,

 

I have the same issue right now and found this thread because I was looking for a solution to this. Nested polygon pour shows up in design, as well as in CAM preview, but is missing after export.

 

I also have the problem that sometimes Thermals are very thin. It seems if I refill the polygons its fixed, but I am not sure. I am in Austria and we use "," as Komma. I did not change something in the environmental variables but I faced no issues with commas, I think.

 

Thanks for debugging. Hope you find a solution/workaround!

Best regards,

Andreas

Message 12 of 18
RichardHammerl
in reply to: a_tekautz

Hi Andreas  @a_tekautz 

 

thanks for your post. I think the dev team is already a step further and the fix becomes more tangible. Work in progress...  😉

 

About polygon width and thermal width. I am pretty sure it is not environment dependent. Is there are working process where you could reproduce the problem? Does this happen when you change the polygon settings. In Fusion electronics in the Inspector panel of the 2D PCB, we have an option for changing the line width of the polygon and the width of the thermals. 

poly-width.png

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Grüße,

Richard Hammerl

Autodesk
Message 13 of 18
a_tekautz
in reply to: RichardHammerl

Hi Richard, 

thanks for your answer. I'll stay tuned 😉

in the meantime I painted the insides of my polys with some wires, not the most elegant way in the world, but it would work. If you manage to solve the issue soon I can come back to polygons for this board again 😉

 

Regarding thermals, I am aware, that one can change withs and isolation, better than in EAGLE before. On Gerber export its sometimes correct, sometimes it is not. It always renders correct in the view port, but sometimes on Gerber export thermals are very thin. Workaround is to redraw polys, save, export again. Till now this always worked for me. But you anyways have to be cautious, that you don't oversee this and send it to your manufacturer like this. 

Thanks, 

best regards,

Andreas

Message 14 of 18

Dear Fusion 360 Team,

 

Just want to say with no irony: You guys rock - big time.

 

The problem disappeared with the latest update.

 

I am still smiling in awe at my computer in which speed you fixed this bug.

In fact, the entire experience was a blast.

 

A bit of context: First, I ran into this bug thinking ///uhhhh, such a weird behavior CAN NOT be a bug but must be a user error///, so I searched and searched for an answer and tried this and that, and every combination, and then, after having lost all faith, found this forum post.

 

And sure enough, bullseye!

 

And then all hell breaks loose. Not only a lightspeed reaction from Richard Hammerl, then also Jorge Garcia shows up to the party, and I shake my head thinking "is this happening?" . The person you know from hours and hours of electronics tutorials ... is showing up, in the flesh.

 

Talk about "Did I dazzle you... did I... jump of the page?". You did!

(movie reference, those who know, know)

 

Speechless. F360 has its quirks (like all other), but the CAD and E-CAD integration is mindblowing. It helps me so much with packaging/placement/arrangement/clearance, it is a killer feature indeed.

I can only say again: Thank you so much!

With best regards,

Timo Schneemann

Message 15 of 18
lukeHPRKU
in reply to: vicgdmQVSSJ

Having this same issue, for now we are exporting the board(.brd) file and opening it with eagle. Then using the cam in eagle to create gerber files. This seems to work for now although very clunky.

Message 16 of 18

Hi @lukeHPRKU et.al.,

 

So sorry for any inconvenient and thank you all very much for reporting this issue to us.

Please update Fusion to latest version (v. 2.0.9930), then you will get the fix about this issue.

 

Please feel free to let us know if you need our further assistant.

Thank you.

 

Regards,

Helen



Helen Chen
Principle QA for Fusion 360 Electronics
Message 17 of 18

Hello Fusion 360-Team!

 

Thanks for fixing the issue, I just tried the new version and now the Gerber export works as expected again. Yesterday I was not able to export correctly, but now it seems to be fixed as far as I can tell.

 

Thanks again for your quick support!

 

Best regards

Andreas

Message 18 of 18

Thank you very much for your confirmation @a_tekautz .

So happy to see it works for you.

 

Please keep posting issue in the forum if you find any in the future.

Much appreciated!

 

Regards,

Helen



Helen Chen
Principle QA for Fusion 360 Electronics

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