Length & Width
+/- 2.0 mmStandard sheared edges. Tighter tolerances are available via laser cutting.
Engineering Guidelines
Design for
Manufacturability
Understanding physical constraints is the first step to successful engineering. Explore the critical manufacturing parameters from the 1:1 rule to margin tolerances that dictate perforated metal design.
Critical Constraint
The 1:1 Golden Rule
To prevent punch pins from breaking under extreme compressive stress, the hole diameter must be equal to or greater than the material thickness.
- Standard Steel & Aluminum: Diameter >= Thickness (1:1 ratio)
- Stainless Steel: Diameter should ideally be 1.5x thickness due to higher shear strength requirements.
Constraint Checker
2.0 mm
3.0 mm
Manufacturable Design
The hole diameter (3 mm) is sufficient for a 2 mm thick sheet. Punch tools will operate safely.
Margins & End Patterns
Defining sheet boundaries is critical for structural integrity, mounting, and aesthetic alignment.
Safe Margins
Margins are unperforated areas along sheet edges. Standard margins are typically 10 mm to 20 mm on length sides, with no margin on width sides unless specified.
Side Margin (Length)
End Margin
End Patterns
Finished Ends: The pattern stops cleanly and leaves a solid, uniform border. Ideal for visible architectural panels.
Standard Tolerances
Unless otherwise specified, all perforated products follow these commercial manufacturing tolerances.
Thickness
+/- 10%Based on standard mill material tolerances.
Margins
+/- 3.0 mmDepends on pattern stretch and leveling process.
Flatness
Commercial StandardRoller-leveled sheets may retain slight bow depending on open area.
Missing Holes
Max 1 per 10,000May occur due to punch pin breakage during high-speed production.
| Parameter | Standard Tolerance | Notes |
|---|---|---|
| Length & Width | +/- 2.0 mm | Standard sheared edges. Tighter tolerances are available via laser cutting. |
| Thickness | +/- 10% | Based on standard mill material tolerances. |
| Margins | +/- 3.0 mm | Depends on pattern stretch and leveling process. |
| Flatness | Commercial Standard | Roller-leveled sheets may retain slight bow depending on open area. |
| Missing Holes | Max 1 per 10,000 | May occur due to punch pin breakage during high-speed production. |
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