Summary
At Balford, we believe transparency is the foundation of a successful partnership. To help you evaluate if we are the right fit for your project, we clearly define what we do not and cannot do. This guide outlines our capability boundaries in terms of part size, speed, tolerance, and cosmetic requirements, allowing you to assess fit quickly and accurately.
1. We Do Not Run Micro-Stamping
We do not accept projects where the blank size for deep drawing is less than 3mm or the final outer diameter is under 0.3mm.
Micro-stamping and micro-deep drawing require specialized equipment, ultra-precision tooling, and dedicated cleanroom environments. These components, common in medical implants or micro-connectors, operate at a scale where material behavior changes significantly . Our expertise and equipment are optimized for larger, robust industrial components.
If your part is smaller than a few millimeters, we are not the right partner and will recommend you to a specialist.
2. We Do Not Run Oversized Stamping
We cannot process parts where the blank size exceeds 600mm or the finished drawn height exceeds 200mm.
Our press line is not configured for parts of this scale. Oversized stamping often requires massive, specialized presses (e.g., 800+ tons) and handling systems . Our equipment is designed for high-precision, medium-sized components, which aligns with the needs of the automotive and industrial sectors we serve.
For parts beyond this dimension, you would need to consult a heavy-gauge stamping house.
3. We Do Not Do High-Speed Stamping
We operate medium to low-speed stamping, with a maximum operating speed of 120 strokes per minute (SPM). We do not do high-speed stamping.
High-speed stamping, often exceeding 200, 800, or even 2000 SPM, is a distinct manufacturing discipline . It requires specialized press designs, ultra-hard tooling (e.g., carbide), sophisticated feeding systems, and advanced vibration management to function reliably at those speeds .
Our focus is on process stability and precision, not throughput. Medium-speed operation allows us to maintain tighter control over material flow, reduce tool wear, and perform more rigorous in-process inspections—critical for the complex deep draws we specialize in.
4. We Do Not Do “Cosmetic-Grade” Finishes
We do not produce parts that are finished to a “cosmetic-grade” or “artwork” standard, where the surface must be flawless and visually perfect.
Our manufacturing expertise is in functional components, where dimensional accuracy, sealing performance, and mechanical properties are paramount. While our deep drawn surfaces are typically smooth and clean, they are not intended for applications where microscopic surface imperfections are unacceptable (e.g., visible exterior trim on luxury goods). Achieving that level of finish requires dedicated post-processing like electropolishing or hand-finishing in controlled environments, which is outside our standard process scope .
5. We Do Not Do Micron-Level Tolerances
We do not accept projects requiring micron-level dimensional or geometric tolerances (e.g., < ±0.01mm) as a standard capability.
Precision stamping at that scale, often near ±0.001mm or ±0.0001 inches , requires a level of machine precision, environmental control (temperature and humidity), and measurement capability that is not part of our standard offering. Our standard precision tolerance is within ±0.05mm to ±0.25mm for deep drawn parts, which is industry-standard for robust engineering components .
If your design requires extreme precision, we will be upfront about the need for a secondary, specialized operation like ironing, which is outside our core service.
Why We Define Our Boundaries
By clearly stating what we don’t do, we ensure we only take on projects where we can excel and deliver value. This focus allows us to:
- Maintain High Quality: We avoid the risk of failure on applications not suited to our equipment.
- Be Transparent: You can trust our quotes and lead times because they are based on realistic capabilities.
- Focus on Our Strengths: We dedicate our engineering and production resources to complex, mid-sized deep drawn and precision stamped parts where we have deep expertise.
FAQ: Capability Questions
Q: What is the minimum wall thickness you can achieve?
A: This depends on material and part geometry. As a general guideline, our process is optimized for materials with good formability (e.g., low-carbon steel, aluminum). We typically work with starting blank thicknesses from 0.5mm to 3.0mm. For thinner materials below 0.5mm, we may not be the ideal partner, especially for complex deep draws.
Q: What is your typical tolerance for a deep drawn part?
A: Our standard capability holds dimensional tolerances within a range of ±0.05mm to ±0.25mm for critical features, consistent with standard industry practice for deep drawing . This tolerance is suitable for functional applications in automotive and industrial systems. Tighter requirements would be evaluated on a case-by-case basis but are not our standard offering.
Q: Can you produce a part with a very smooth, decorative surface?
A: We produce parts with a “as-drawn” surface finish, which is generally clean and free of major defects but may have light tool marks. For applications where the cosmetic appearance is critical and a flawless finish is required, we would recommend a partner specializing in post-processing like electropolishing or fine polishing.
