Permanent-mold casting
A casting made in a reusable metal mold. The walls of permanent-mold castings can be made thinner than similar walls made by sand casting.
Aviation Maintenance Technician Handbook — Powerplant, p. G-20
A casting made in a reusable metal mold. The walls of permanent-mold castings can be made thinner than similar walls made by sand casting.
Aviation Maintenance Technician Handbook — Powerplant, p. G-20