Forward Summary:
• Can Copy, Paste and Position many circuits into one Fritzing (and KiCad) PCB’s
• Can add/delete circuit elements…
Regarding Multi Circuits (same or different):
• Can copy a circuit from one PCB to a different PCB.
• Can connect new traces from one to the other.
• See video below
Regarding Bowing:
• Have done many boards using double-sided tape.
(Don’t use the Black-thick tape, will never get PCB off machine. The White-thin tape is perfect.)
Regarding DXF:
• For a Quick Test I created some Lines (in FreeCad) and Exported as DXF.
• I Imported the DXF into KiCad (into a PCB) Bingo! No problems. No special attention to doing it. Screenshot below. Expand the photo to fully see it…