Le Sueur Inc Logo
1. Le Sueur Incorporated
Le Sueur, Minnesota | Founded 1946
Le Sueur Incorporated stands as one of the nation's oldest and most experienced permanent mold casting facilities. With over 75 years of continuous operation, they've built an unparalleled reputation for quality and precision. Operating 15 tilt-pour work centers and 8 low-pressure permanent mold machines, Le Sueur also expanded capabilities through the 2023 acquisition of Craft Pattern and Mold for integrated pattern manufacturing and tooling.
Key Capabilities:
- 15 tilt-pour work centers and 8 low-pressure machines
- Gravity pour casting and die casting operations
- Plastic injection molding capabilities
- Integrated pattern and tooling via Craft Pattern and Mold
Ross Aluminum Logo
2. Ross Aluminum Castings
Sidney, Ohio | Founded 1931
As one of the industry's oldest foundries, Ross Aluminum Castings brings nearly a century of expertise in high-performance casting solutions. Their dual mastery of sand and permanent mold casting makes them invaluable for aerospace, defense, and performance racing applications. Their commitment to vertical integration -- maintaining in-house machining, testing, and pattern making -- ensures superior quality control and faster response times.
Key Capabilities:
- Sand and permanent mold casting dual expertise
- Aerospace-grade and defense-specification components
- Performance racing castings for demanding applications
- In-house machining, testing, and proprietary pattern making
PIAD Precision Logo
3. PIAD Precision Casting
Greensburg, Pennsylvania | Founded 1967
PIAD Precision Casting holds a unique distinction as the only leading copper-based permanent mold foundry in North America. Their proprietary chill cast process delivers exceptional thermal and electrical conductivity properties essential for power distribution and electrical applications. Operating a 54,000 sq ft dedicated foundry with 28,000 sq ft machine shop, PIAD provides complete control from casting through finish machining.
Key Capabilities:
- Exclusive copper-based permanent mold specialization
- Proprietary chill cast process for superior conductivity
- 54,000 sq ft foundry with 28,000 sq ft machine shop
- Electrical and power distribution component focus
General Foundry Logo
4. General Foundry Service
San Leandro, California | Founded 1946
General Foundry Service represents a rare blend of versatility and specialization. Operating five distinct casting processes within a single integrated facility, they deliver unmatched flexibility for medical, biotech, robotics, and defense sectors. Their comprehensive process portfolio enables customers to leverage the optimal casting method for each unique application, from prototype development to low-volume production.
Key Capabilities:
- Five casting methods in one integrated facility
- Medical device and biotech instrumentation castings
- Robotics, automation, and defense-grade components
- Prototype through low-volume production flexibility
LeClaire Manufacturing Logo
5. LeClaire Manufacturing
Bettendorf, Iowa | Founded 1966
LeClaire Manufacturing exemplifies family-owned manufacturing excellence. Combining sand and permanent mold aluminum casting capabilities with in-house design and mold manufacturing, they serve agricultural, automotive, heavy truck, and marine industries. Their commitment to vertical integration -- from concept through finished casting -- combined with family business values, ensures responsive, high-quality partnerships.
Key Capabilities:
- Sand and permanent mold aluminum casting
- In-house design engineering and mold manufacturing
- Agricultural, automotive, heavy truck, and marine components
- Family-owned with responsive partnership approach
How to Choose the Right Permanent Mold Casting Partner
Selecting the right foundry depends on your specific casting requirements. Consider these factors:
Volume and Process
High-volume tilt-pour? Le Sueur's 15 work centers excel. Need process flexibility? General Foundry's five-process capability is ideal. Aerospace requirements? Ross delivers uncompromising quality.
Material Specialization
Copper-based castings? PIAD is North America's premier specialist. Aluminum for agriculture or marine? LeClaire's integrated design adds value. Defense-grade? Ross has nearly a century of proven results.
Integration and Service
Full vertical integration reduces supply chain complexity. Le Sueur, Ross, PIAD, and LeClaire all provide in-house design, tooling, machining, and testing capabilities.
Partnership Value
These manufacturers average 75+ years of experience. Family-owned LeClaire brings personalized responsiveness. Choose partners who understand your industry and grow with your business.