ISO 13857 Finger-Safe Guard & Staggered 60° High-Airflow Perforation Standard 1:1 DXF · SVG · PDF Default Spec: 120 × 105 × 10 mm (T=1.5mm)

Perforated Circular Fan Grille, Speaker Mesh & Acoustic Baffle Plate Generator (DXF & SVG)

1:1 CAD ENGINE READY

Perforated Circular Fan Grille, Speaker Mesh & Acoustic Baffle Plate Generator (DXF & SVG)

1CAD Style & Material SetupCalibration

Select CAD Style / Model (36)Search & Filter

Material Stock Preset (Auto-Sets Caliper T & Kerf K)

Display Units

Scale Lock

1:1 True Scale

2Dimensions (1:1)Millimeters (mm)

Outer Frame Width (L mm)120 mm

Mounting Bolt Pitch (W mm)105 mm

Vent Hole Diameter (Ø mm)10 mm

Thickness (T mm)

Laser Kerf (K mm)

3Brand Logo & 1:1 ExportZero Login

2D & 3D Brand Logo Mockup:

📤 Upload Logo

Print Artwork Bleed Guide:

Embed Spec Sheet & 50mm / 1" Scale Bars (Added on separate DIMENSIONS layer)

Pre-Flight Geometry Audit8/8 PASSED

PASS
Closed Outer Contours: 30 closed LWPOLYLINE cut loop(s) verified
PASS
Zero Duplicate Cut Paths: 418 unique segments (0 laser double-burns)
PASS
Flute & Kerf Tolerance Guard: T=1.50mm, K=0.000mm within structural limits
PASS
ISO Layer Color Separation: CUT (Red), CREASE (Blue), SCORE (Emerald), DIMENSIONS isolated
PASS
1:1 Physical Unit Header: Explicit mm/in SVG viewBox + DXF $INSUNITS=4 + 50mm PDF bar
PASS
Exact 2D Cut Bounding Parity: Cut Bounds 120×105mm === Blank Size
PASS
2D ↔ 3D Kinematic Model Sync: Archetype 'circle_vent_grille' synced (1 3D component(s))
PASS
True Vector Sheet Nesting Sync: 1:1 vector paths mapped to multi-up sheet grid

100%

CUT (1.28m) CREASE/SCORE (0.28m)● 30 Loops · Est. Cut: ~44s

1:1 Synced · Blank: 120 × 105 mm

2D 1:1 Unfolded Vector BlueprintBlank: 120 × 105 mm (4.72" × 4.13")

3D Interactive Fold & Orbit (Kraft Board)

80%

0%100%

Camera:

Yaw: -28°Pitch: 24°

⟳ Drag Anywhere to Rotate 3DL=120 × W=105 × H=10mm

Faceplate Size

120.0 × 105.0 mm

Vent Aperture (Ø)

Ø 85.0 mm

Perforation Holes

25 × Ø10mm

Corner Mounts

4 × Ø4.4mm (M4)

Structural & Manufacturing Specification Summary

Quick Default Download: ↓ .DXF ↓ .SVG ↓ .PDF

Designing a high-airflow PC fan grille (80mm, 120mm, 140mm, or 200mm), audio speaker mesh, or industrial electronics vent plate requires balancing open-area airflow percentage against structural web stiffness and ISO 13857 finger safety. Our parametric generator creates a corner-chamfered square mounting plate with 4 corner M4/M5 fan mounting holes at your exact bolt pitch (W), then populates the circular airflow aperture with concentric 60-degree staggered rings of closed circular perforations (diameter = H) separated by a rigid 3.0mm structural web bridge.

CUT LAYER #EF4444 (ACI 1)

CREASE / BEND #2563EB (ACI 5)

SCALE HEADER $INSUNITS=4 (1:1 mm)

SIMULATION 2D + 3D + Nesting

Pre-Calibrated Industry Sizes (2)

Standard Product Presets Built on This Circular Fan Grille & Speaker Mesh Engine

120 × 105 × 10 mm (T=1.5mm)

120mm PC Case Fan Grille (DXF)

Standard 120 × 120 mm Axial Cooling Fan Frame with Ø104 mm Active Blade Aperture

Load Preset Spec →

140 × 124.5 × 10 mm (T=1.5mm)

140mm Fan / 5.25" Speaker Grille

Standard 140 × 140 mm Cooling Fan & 5.25" Speaker Frame with Ø124 mm Active Aperture

Load Preset Spec →

Structural Geometry & Allowances

Mathematical Blank & Tolerance Formulas

Concentric Ring Radial Step Pitch (Step_R)

Step_R = (D_hole + Web_Bridge) * (sqrt(3) / 2) = 0.866 * (H + 3.0 mm)

Packs circular perforations in a 60-degree staggered hexagonal distribution to maximize open airflow area while preserving uniform web strength.

Number of Holes in Ring k (N_k)

N_k = max(6, round((2 * pi * R_k) / (D_hole + 3.0 mm)))

Automatically scales the number of circular cutouts along each concentric ring circumference so inter-hole spacing stays constant.

Open Airflow Aperture Diameter (D_aperture)

D_aperture = L_frame - 16 mm

Matches the active blade sweep diameter of standard axial cooling fans while leaving a solid outer mounting rim.

Pre-Press & Production SOP

Step-by-Step Export & Assembly Guide

1 Enter Outer Square Frame Width (L, e.g., 120mm for a 120mm PC fan), Corner Bolt Hole Pitch (W, e.g., 105mm for a 120mm fan), and Perforation Hole Diameter (H, e.g., 8mm to 12mm).
2 Inspect the concentric staggered perforation array and 4 corner mounting holes in the 2D and 3D views.
3 Export as 1:1 .DXF, .SVG, or .PDF; every single perforation hole and outer plate contour is exported on the RED CUT layer ready for instant laser or CNC cutting.

Board Caliper, Laser & Die-Cutting Reference

Material Thickness, Creasing Matrix & Laser Kerf Settings

Material / Sheet Stock	Caliper Thickness (T)	Recommended Tooling / Laser Setup	Allowance / Kerf Spec	Primary Use Case
1.5mm–2.0mm 5052 Aluminum or 304 Stainless Steel	1.50 mm	Fiber Laser or CNC Turret Punch	3.0 mm inter-hole structural web bridge	120mm/140mm PC radiator fan grilles, server rack panels, industrial enclosures
3.0mm Cast Acrylic / Matte Black ABS	3.00 mm	CO2 Laser or CNC Router	Clean flame-polished hole edges	Custom PC mod fan covers, home theater speaker grilles, amplifier vents
3.0mm Baltic Birch / Walnut Veneer Plywood	3.00 mm	CO2 or Diode Laser	Acoustic baffle perforation array	Vintage guitar amp grilles, studio acoustic diffuser panels, smart speaker covers

Packaging & CNC Engineering FAQ

Frequently Asked Questions — Circular Fan Grille & Speaker Mesh

What are the standard dimensions and bolt pitches for 80mm, 120mm, and 140mm PC fans?

For an 80mm fan: set Frame Width L = 80mm and Bolt Pitch W = 71.5mm. For a 120mm fan: set Frame Width L = 120mm and Bolt Pitch W = 105.0mm. For a 140mm fan: set Frame Width L = 140mm and Bolt Pitch W = 124.5mm.

Why are all perforation holes exported on the CUT layer instead of SCORE?

Unlike a paper calibration grid, a physical fan grille or speaker mesh must have its circular holes cut all the way through the sheet metal, acrylic, or plywood so air and sound pass freely.

What hole diameter (H) gives the best balance of airflow and finger safety?

An 8mm to 10mm hole diameter (H = 8 to 10) with a 3mm web bridge achieves over 52% open airflow area while preventing fingers and cables from contacting spinning fan blades.