Originally posted by: HearMeRoar
I find Karna's armor fascinating because of one more thing.
Agni.
Mining, metalworks, etc. needed fire.
Here is where Panchali's Agni origin comes into play. If her and Dhrishtadyumna were part of a mining community and/or Angirasa brahmins, Drupada's adoption of them might have been a power move itself. Access to the latest technology. Only, armor making wasn't as easy as weapon making, since it had to fit body contours.
Perhaps, the duo was part of a mining community. Or owned mines.
Something to support this -
Drishtdumya -
Brahmanas (present there), their expectations fully gratified, bestowed names upon the new-born pair, 'Let this son of king Drupada, they said, be called Dhrishtadyumna, because of his excessive audacity and because of his being born like Dyumna with a natural mail and weapon.'
Karna -
Vaisampayana continued, "Thereupon, O king, taking the blazing dart, Karna began to peel off his natural mail.