My last project used a cheap chinese PCB house and I had to modify my PCB export settings to work with their outdated and buggy software (CAM 350).
Those settings are:
YES Use Protel filename extensions
YES Coordinate format: 4.5, unit mm
NO Use extended X2 format (recommended)
YES include netlist attributes
YES disable aperture macros (not recommended)
Can I just use these settings going forward for all fabs, even fancyschmancy US based ones, etc? Is there anything actually being lost by disabling the recommended settings?
Is there an actual noticeable difference to the PCB if Aperture Macros are disabled? Or X2 format? Or 4.5 format instead of 4.6?