topic Re: Routing traces on the top and bottom layer to increase current capacity. in EAGLE Forum

Routing traces on the top and bottom layer to increase current capacity.

Anonymous — Thu, 26 Sep 2019 03:28:57 GMT

Hello,
I am trying to route identical traces on the top and bottom layers of a PCB so that I can double the current handling capabilities. However, Eagle will not let you route an already routed trace. Is there a way to do this in the current version of Eagle?

Thanks heaps in advance,
Johann

Re: Routing traces on the top and bottom layer to increase current capacity.

one-of-the-robs — Thu, 26 Sep 2019 06:36:13 GMT

You can route over an already routed trace if you hold the <CTRL> key (probably <CMD> on Mac) when starting the route. On recent versions, though, this falls foul of the "loop removal" tool, so you need to disable that first.

Re: Routing traces on the top and bottom layer to increase current capacity.

Anonymous — Thu, 26 Sep 2019 07:13:34 GMT

Thank you very much.
Oddly enough you don't hold control down anymore but you do have to have the "loop removal" tool turned off.
Thank you for the assist mate.
Kind regards,
Johann

Re: Routing traces on the top and bottom layer to increase current capacity.

Anonymous — Wed, 22 Jul 2020 14:15:18 GMT

I have this problem too, and the problem I have is that SET LOOP_REMOVAL OFF is overridden in my eagle.scr. Why does autodesk think they know my job better than I do? I do not want this annoying feature turning itself on automatically. I really hate the mess this unwanted feature is causing.

Re: Routing traces on the top and bottom layer to increase current capacity.

jorge_garcia — Wed, 22 Jul 2020 19:35:05 GMT

Hi @Anonymous,

Just add that command to your eagle.scr, that will make sure it's respected when you start up the board editor.

Just add SET LOOP_REMOVAL OFF;

Under the BRD section of the eagle.scr file.

Let me know if there's anything else I can do for you.

Best Regards,