Insert molding is a precision injection molding process that encapsulates metal, plastic, or ceramic components—called inserts—within a molded plastic part. These inserts are placed into a mold cavity before plastic is injected, forming a tight mechanical or chemical bond between the materials.
This method enhances the structural integrity, electrical conductivity, and wear resistance of parts without requiring post-molding assembly. Common insert types include threaded studs, electrical contacts, and structural reinforcements—especially useful in automotive, medical, and industrial products that demand high performance and long life.
At Topmetry, we specialize in custom insert molding for both prototyping and production. Our team ensures proper insert placement, precise molding conditions, and reliable bonding across a wide range of materials and designs—so your parts are built stronger, faster, and smarter.

