I'm not aware of them stamping parts...they are Laser Cutting ribs and other parts...then forming them in a hydraulic press. No Stamping. If they were stamping the parts, I'd have no concern at all.
QUESTION...In order for the aircraft to be approved by the FAA, the plans had to be approved also..not necessarily the processes??...so, do the produced parts match the plans..i.e. dimensions etc. ?
In PMA approval for certificated aircraft...the produced parts must match the approved plans...is it the same in experimental?