For simple circuits it's fairly straightforward to recreate in a CAD tool. The minute you get more than dual layer, things get hairy in a PDF. Also you can't r

For simple circuits it's fairly straightforward to recreate in a CAD tool. The minute you get more than dual layer, things get hairy in a PDF. Also you can't really send PDFs to fabs to get boards built, as they miss info that you need in order to make a PCB.