In custom OEM metal projects, precision is not optional — it defines whether a product works or fails.
This case study shows how we helped a client resolve critical tolerance issues during the first sampling phase of a custom aluminum plate project.
Project Overview
A client from the U.S. approached us with a custom aluminum plate design featuring a complex hole pattern and precise alignment requirements.
The application required:
Accurate hole positioning
Consistent spacing across the entire plate
A large circular cutout aligned with internal structure
High-quality surface finishing
The initial file was provided in inches, while our engineering team works in millimeters — a common difference in international collaboration.
Challenge
During the first sampling phase, the client identified several critical issues:
Hole pattern misalignment
Center screws not positioned correctly between holes
Large circular cutout slightly off position
As the product required precise assembly, even small deviations made the samples unusable.
Our Approach
Instead of treating this as a simple production task, we approached it as a product development project.
1️⃣ Unit Conversion & Engineering Alignment
We carefully converted the original inch-based design into millimeters, ensuring all dimensions matched exactly (1 inch = 25.4 mm).
2️⃣ Iterative CAD Optimization
Based on the client’s feedback, we:
Shifted the entire hole pattern upward
Adjusted the large circular cutout downward
Re-aligned the screw positions to sit precisely between holes
Each revision was confirmed with updated CAD drawings before moving forward.
3️⃣ Clear Drawing Confirmation
To avoid repeated errors, we worked closely with the client to finalize one confirmed drawing as the production reference.
Our engineering team took immediate action:
✔ Re-verified all dimensions against original drawings
✔ Adjusted CNC machining parameters and tooling alignment
✔ Redesigned positioning references for hole pattern accuracy
✔ Re-tested assembly tolerances before second sampling
Result
After refinement, the final samples achieved:
Perfect alignment of hole pattern
Accurate positioning of all functional elements
High-quality surface finish (client specifically praised the coating)
Client feedback:
“They look great! Love the paint coloring.”
The project has now moved into the testing and pre-production stage, with potential for volume production.
Key Takeaways
This project highlights several important factors in custom manufacturing:
✔ Precision matters — small deviations can impact usability
✔ Clear communication between design and engineering is critical
✔ Confirmed drawings are essential before production
✔ A reliable supplier should support not just manufacturing, but product development
Looking Forward
We are currently supporting the client with:
Assembly testing phase
Production planning
Potential pilot batch preparation
At HIDSON, we don’t just produce — we help bring ideas into production-ready solutions.
In OEM manufacturing, we believe:
👉 Making parts is easy
👉 Making them fit perfectly in real assembly is what truly matters
Why Precision Matters in OEM Manufacturing
In many projects, failure is not due to design —
but due to poor tolerance control during production.
We focus on:
Precision machining
Assembly compatibility
Real-world usability
About Us
HIDSON specializes in OEM/ODM development of metal and consumer accessory products, including:
Aluminum phone stands
Magnetic mounts
Custom metal structures
Promotional and functional hardware
If you are developing custom aluminum or metal components and facing:
Tolerance issues
Assembly problems
Sampling delays
👉 We can help optimize your project from prototype to production.
📩 Contact us today for technical support.