General Foundry
San Leandro, United States
Verified supplier · Last verified 28 Aug 2026
General Foundry Service is a California-based precision aluminum and zinc sand casting foundry with over 80 years of manufacturing expertise. The company specializes in custom-cast components for prototype, low-volume, and intermediate-volume production using five complementary casting processes including green sand, no-bake sand, permanent mold, rubber plaster mold, investment (lost-wax), and 3D printed sand mold casting. General Foundry delivers engineered castings with superior surface quality, repeatable dimensional control, and production reliability, complemented by secondary CNC machining and value-added finishing services.
What makes them different
General Foundry integrates advanced 3D printed sand mold casting technology with traditional foundry processes, enabling rapid prototyping and low-volume production with superior dimensional accuracy. The company's 80+ year heritage combined with modern additive manufacturing capabilities for sand mold production provides a unique competitive advantage in delivering complex geometries and tight tolerances that traditional casting alone cannot achieve.
Industries served
- Medical / Surgical Equipment
- Biotech / Life Sciences
- Robotics & Electromechanical Systems
- Homeland Security / Military / Defense
- Semi-Conductor Equipment
- Telecom / Networking
- GPS Equipment
Capacity
Multi-process foundry with capabilities spanning green sand, no-bake, permanent mold, rubber plaster mold, investment casting, and 3D printed sand mold processes. Facility located at 1390 Business Center Place, San Leandro, CA. Serves prototype through intermediate-volume production runs.
Technologies
- SAF
Materials
- Aluminum AlSi10Mg
- Zinc
Certifications
- ISO 9001
- ITAR
Typical lead time: Contact for quote
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