General Foundry Service
General Foundry Service is a California-based, ITAR-registered precision aluminum and zinc aluminum foundry serving OEMs in medical, biotech, robotics, defense, semiconductor, telecom, and GPS with turnkey castings from prototype through intermediate-volume production.
- Company typePrivate
- Founded1946
- HeadquartersSan Leandro, United States
- Headcount101–250
- GTM typeB2B
- OfferingHardware or Manufacturing
What General Foundry Service does
General Foundry Service is a privately held, California-based custom metal foundry founded in 1946 in San Leandro, operating with 101-250 employees. The company produces precision aluminum and zinc aluminum castings for OEM customers across seven primary verticals: medical/surgical equipment, biotech/life sciences, robotics and electromechanical systems, homeland security/military/defense, semiconductor equipment, telecom/networking, and GPS equipment. It holds ISO 9001:2015 certification and ITAR registration, qualifying it for regulated defense and medical supply chains.
The foundry operates five complementary casting processes under one roof — Green Sand, No Bake (Air Set), Permanent Mold, Rubber Plaster Mold, and Investment (Lost Wax) — supplemented by 3D Printed Sand Mold casting for rapid prototyping. It uses ultra-fine grain Olivine sand mined from the Pacific Northwest to achieve a documented 125-150 RMS surface finish on green sand castings, with No Bake capability supporting parts up to 6 feet in diameter and 500 pounds. The operation is vertically integrated with in-house patternmaking/toolmaking, secondary CNC machining, and value-added services (plating, wet painting, powder coating, screen-printing, pad-printing, and light assembly), delivering ready-to-assemble components.
General Foundry Service generates revenue through a job-shop, custom-quote model (each project priced via Request for Quote rather than tiered pricing), targeting prototype through intermediate-volume production runs. Distribution is exclusively direct sales — website RFQ, phone, and email — with no channel partners, resellers, or distributors. The documented 40-60% cost reduction versus machined hog-outs and 4-8 week lead times (4-6 weeks for biotech/life sciences turnkey) are core commercial levers. Two named enterprise customers appear in published case studies (Vectrix Corporation in zero-emission vehicles and Rainin in life sciences), with marketing concentrated on technical content via website, blog, LinkedIn, and YouTube.
General Foundry Service firmographics
Firmographics- Name
- General Foundry Service
- Legal name
- General Foundry Service
- Website
- https://genfoundry.com
- Company type
- Private
- Founded year
- 1946
- Operating status
- Operating
- Headcount range
- 101–250 employees
- Short description
- General Foundry Service is a California-based, ITAR-registered precision aluminum and zinc aluminum foundry serving OEMs in medical, biotech, robotics, defense, semiconductor, telecom, and GPS with turnkey castings from prototype through intermediate-volume production.
- Ownership category
- akta.pro rank
General Foundry Service industry classification
Industry- Product category
- Metal Castings and Foundry Services
- NAICS
- Aluminum Foundries (except Die-Casting) (331524), Other Nonferrous Metal Foundries (except Die-Casting) (331529)
- SIC
- Nonferrous Foundries (Castings) (3360)
- akta.pro primary industry
- Aluminum Casting & Ingot/Billet/Slab Production (IMAKACAE)
- akta.pro secondary industry
- Metal 3D Printing Service Bureaus (SLM/DMLS, EBM, Binder Jetting) (IMAAADAB)
Keywords
Where General Foundry Service is headquartered
LocationHeadquarters
- HQ city
- San Leandro
- HQ country
- United States
- HQ region
- North America
Offices1 record
Markets served
General Foundry Service business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Personnel, Operations, Infrastructure, Technology or R&D, Supply Chain, Marketing or Sales
Revenue model
- Custom Casting Manufacturing Services: Job-shop manufacturing model producing custom aluminum and zinc aluminum castings. Revenue generated from casting production, secondary machining, and value-added finishing services. Services provided to OEMs and engineers for prototype, low-volume, and intermediate-volume production runs.
- Value-Added Services: Secondary CNC machining, surface finishing (plating, wet painting, powder coating, screen printing, pad printing), and light assembly services bundled with casting orders.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Other | Pay-as-you-go | Custom Quote-Based Pricing |
Go-to-market motion1 record
Distribution channels2 records
Marketing channels5 records
General Foundry Service product offering
Product offeringCore offering
General Foundry Service is a custom aluminum and zinc aluminum foundry that produces precision cast components for OEMs and engineers across prototype, low-volume, and intermediate-volume production runs. Operating five complementary casting processes (Green Sand, No Bake Air Set, Permanent Mold, Rubber Plaster Mold, and Investment Lost Wax) plus 3D printed sand mold casting, the company delivers fully finished, ready-to-assemble castings through in-house pattern making, CNC machining, and surface finishing services.
Product overview
General Foundry Service is a California-based precision aluminum and zinc aluminum foundry offering turnkey custom metal casting solutions. The company operates six complementary casting processes under one roof: Green Sand Casting, No Bake (Air Set) Sand Casting, Permanent Mold Casting, Rubber Plaster Mold Casting, Investment (Lost Wax) Casting, and 3D Printed Sand Mold Casting. These core casting processes are supported by in-house Patternmaking/Toolmaking, Secondary CNC Machining, and Value Added Services (plating, painting, powder coating, assembly). The company specializes in low to intermediate volume production for prototype through full-rate manufacturing, serving industries including medical, biotech, robotics, semiconductor, defense, telecom, and GPS equipment. All offerings are provided as a single-source turnkey solution where cast components are delivered finished and ready-to-assemble.
Differentiator
Problem solved
Functional benefit
Products and services
- Green Sand Castings Traditional sand casting process using a mixture of Olivine sand, Bentonite clay, and water to produce simple and complex metal parts for small to medium-sized applications. Produces an industry-leading 125-150 RMS surface finish.
- No Bake (Air Set) Sand Castings Sand casting process using chemically bonded sand that creates dimensionally stable and accurate molds for larger castings (100+ pounds) and more complex shapes. Capable of producing shapes up to 6 feet in diameter by 4 feet deep and up to 500 pounds in weight with 150 RMS surface finish.
- Permanent Mold Castings Gravity die casting or tilt pour process using machined metal molds that provides higher structural integrity, consistent dimensional accuracy, and good surface finish for intermediate to higher production volumes.
- Rubber Plaster Mold (RPM) Castings Casting process using flexible rubber tools and plaster material molds to produce intricate, highly detailed aluminum or zinc aluminum castings with 63 RMS surface finish, thin walls down to 2mm, and complex geometries similar to die castings.
- Investment Castings (Lost Wax Castings) Precision casting process pouring molten metal into molds made from wax patterns, providing the tightest tolerances (approximately 0.003 inches) and finest detail resolution for complex parts in aerospace, medical, and automotive industries.
- 3D Printed Sand Mold Castings Modern casting approach using 3D printing technology to create sand molds layer by layer, eliminating traditional tooling lead times and enabling complex geometries with reduced labor and faster turnaround for prototypes, including zero-draft geometries and integrated cores.
- Patternmaking / Toolmaking In-house pattern shop services creating patterns, coreboxes, and tooling for all casting processes, enabling design iterations and custom mold creation.
- Secondary CNC Machining Precision CNC machining services for critical features, tight tolerance dimensions, and secondary operations on cast components.
- Value Added Services Complete finishing solutions including plating, wet painting, powder coating, screen-printing, pad-printing, and light assembly for ready-to-assemble cast components.
- Aluminum Alloy Castings Casting services using aluminum alloys including 356, 357, A356, and AlMag 535 (aluminum magnesium) for various strength-to-weight and elongation requirements.
- Zinc Aluminum Alloy Castings Casting services using zinc aluminum alloys including ZA8 (8% zinc, 92% aluminum) providing 2.25x the density of aluminum for heavier ballast bases and lower center of gravity applications.
Quantifiable outcome
- 40-60% cost reduction when converting machined 'hog-outs' to castings with secondary machining
- +2 more outcomes
Companies that use General Foundry Service
Customer profileNamed customers2 records
Segments7 records
Ideal customer profiles5 records
General Foundry Service technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature4 records
General Foundry Service partnerships and signals
Strategic signalScale indicators3 records
Recent moves5 records
Expansion highlights4 records
General Foundry Service competitors and assessment
Company assessmentBroad incumbents
- Xometry: Xometry is an on-demand manufacturing marketplace offering services such as CNC machining, 3D printing, sheet metal, and casting through a supplier network. It is a broad incumbent comparable because it serves engineers and OEMs sourcing custom manufactured parts, though its platform model is broader than General Foundry's owned foundry operation.
- Wisconsin Aluminum Foundry: Wisconsin Aluminum Foundry is a larger, established nonferrous foundry producing aluminum and copper-based castings for multiple end markets. It is a broader incumbent comparable through aluminum foundry manufacturing, though at a larger scale and wider product mix.
Direct peers
- Batesville Products, Inc. Batesville Products provides aluminum and zinc alloy castings, tooling, machining, finishing, and prototype-to-production services. It overlaps closely with General Foundry's turnkey aluminum and zinc aluminum casting model for OEM component customers.
- LeClaire Manufacturing: LeClaire Manufacturing produces aluminum sand and permanent mold castings with machining and finishing support for industrial OEMs. It is comparable to General Foundry's mix of aluminum casting processes and value-added secondary operations.
- Alcast Company: Alcast Company specializes in permanent mold aluminum castings and related engineered manufacturing services. While more focused on permanent mold, it overlaps with General Foundry's aluminum permanent mold offering for OEM cast components.
- Premier Aluminum: Premier Aluminum is an aluminum foundry offering sand casting, permanent mold casting, prototyping, machining, and finishing. It competes in similar low-to-medium volume engineered aluminum casting applications.
- LA Aluminum Casting Company: LA Aluminum Casting Company is a California aluminum foundry offering custom aluminum casting and related foundry services. It is comparable as a regional custom aluminum casting provider serving engineered component requirements.
- Protocast Inc. Protocast is a U.S. custom casting company focused on prototype and low-volume aluminum castings, including rapid tooling and 3D-printed sand mold approaches. It is highly comparable because General Foundry also targets engineers and OEMs needing rapid prototype-to-production aluminum casting solutions.
Emerging players
- Aristo-Cast: Aristo-Cast provides precision investment casting and rapid prototyping services, including complex cast components for engineered applications. It is comparable through General Foundry's investment casting and prototype-focused precision casting capabilities, though narrower in process mix.
Others
- Humtown Products: Humtown Products specializes in 3D printed sand cores and molds for foundries and casting applications. It is adjacent rather than a full direct peer because it overlaps with General Foundry's 3D printed sand mold capability but primarily serves as an enabling mold/core provider.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks5 records
Key highlights7 records
Customer concentration
General Foundry Service social profiles
Digital presenceGeneral Foundry Service compliance and trust
Trust signalCompliance2 records
General Foundry Service financial estimates
Financial estimateRevenue estimate
Valuation estimate
General Foundry Service leadership team
Management profileNumber of profiles
General Foundry Service funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
General Foundry Service M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about General Foundry Service
What does General Foundry Service do?
General Foundry Service is a custom aluminum and zinc aluminum foundry that produces precision cast components for OEMs and engineers across prototype, low-volume, and intermediate-volume production runs. Operating five complementary casting processes (Green Sand, No Bake Air Set, Permanent Mold, Rubber Plaster Mold, and Investment Lost Wax) plus 3D printed sand mold casting, the company delivers fully finished, ready-to-assemble castings through in-house pattern making, CNC machining, and surface finishing services.
Is General Foundry Service a public or private company?
General Foundry Service is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was General Foundry Service founded?
General Foundry Service was founded in 1946. It employs 101 to 250 people.
Where is General Foundry Service based?
General Foundry Service is headquartered in San Leandro, United States, in the North America region.
How does General Foundry Service make money?
Two revenue lines are on record. Custom Casting Manufacturing Services are the primary driver. The others are value-Added Services.
Who are General Foundry Service's main competitors?
Broad incumbents on record are Xometry and Wisconsin Aluminum Foundry. Direct peers are Batesville Products, Inc., LeClaire Manufacturing, Alcast Company, Premier Aluminum, LA Aluminum Casting Company and Protocast Inc.. Aristo-Cast is listed as an emerging player. Humtown Products is listed as an others.
Does General Foundry Service have an API?
No public API is recorded for General Foundry Service.
What industry is General Foundry Service in?
General Foundry Service's product category is Metal Castings and Foundry Services. Its primary akta.pro industry code is IMAKACAE, Aluminum Casting & Ingot/Billet/Slab Production, with a secondary code of IMAAADAB, Metal 3D Printing Service Bureaus (SLM/DMLS, EBM, Binder Jetting). Its NAICS code is 331524 and its SIC code is 3360.