During transfer molding, the material is placed above the closed, heated mold and is forced downward through the gate and into the mold cavities. The mold is held closed while the material cures, resulting in transfer molded parts being cleaner and more consistent than compression molded parts. Leech designs, builds and runs molds to produce parts in the millions with engineering and commodity grade resins. We use thermoset materials in custom or industry standard colors.