There is a problem with vias rectangle drill for components like dc battery connectors(SPC4078 and SPC21365SPC21365
The only way to make it without errors at DRC and PCB manufacturers is to make a VERY BIG via (3.2mm diameter) or to make following operations
1. Place 2 smd pads for every pin (one per layer)
2. Place a 0.5 or 1mm with track over the pin in the MILLING layer
3. Activate the milling layer (also in the pcb manufacturer site)
4. When routing the PCB, connect both PCB sides, sometimes a via must be added
Could be added to cadsoft rectangle sized via in the VIAS layer?
I suppose that it must be added the possibility to use a milling head in the via layer
I spoke to eurocircuits about and they said if there is copper sorrounding the milling in upper and bottom layer they would metallize the rectangle drill