be cast in a mould

be cast in a (some kind of) mold

To be of a particular type (which is specified between "a" and "mold"). I hate the snow, but my kids just love it—they are definitely cast in a similar mold.
See also: cast, kind, mold
Farlex Dictionary of Idioms.

be cast in a — mould

be of the type specified.
1991 Jean Bow Jane's Journey He was certainly not cast in a common mould. She had never met anyone like him before.
See also: cast, mould
Farlex Partner Idioms Dictionary
See also:
  • be cast in a (some kind of) mold
  • mold
  • mould
  • cast in the same mold
  • be cast in the same mould
  • cast up
  • cast a glance
  • cast the gorge at
  • cast the gorge at (something)
  • cast (one's) net wide