4. Making / Having it Made

Check it.... DRC ERC

Design Rule Check

This is complex set of rules that ensure parts and other artwork are placed to within the abilities of the manufacture.
Violation of the rules comes with risk of the PCB failing to function or meet spec. 

Electrical Rule Check
ERC errors need to be fixed before the final processes.

CAM
Depending on the method used to make the PCB the CAM process will be very specific. 
There are 3 main methods: print for photo etch, Gerber for Services, or script for mini-mill

Services
Some service will take "*.BRD" board files.  OSH Park The purple PCB makers does this.


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