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CNC Routing Services

Large-format CNC routing for sheet goods and soft materials — cutting, engraving, drilling, and shaping at speed.

CNC Routing Services use computer numerical control (CNC) routers with high-speed rotating bits to cut, engrave, drill, and shape materials. As a subtractive process, routing is especially strong on large-format panels and soft materials, and is a core method for woodworking, advertising signage, and furniture manufacturing.

Routing CNC machining on AIHFABS
Plastics & composites

Core Definition & Working Principle

CNC routing is a computer-controlled subtractive process. A rotating router bit moves in X, Y, and Z according to a programmed path, cutting material fixed on the table into the required shape, pattern, or text. CAD designs are converted to G-code through CAM software, which then drives the machine.

Best fit: large sheet work and soft materials where “large and fast” beats “small and ultra-precise.”

Key Differences vs CNC Milling

This is key to understanding CNC routing — both are CNC subtractive processes, but they focus on different jobs:

Comparison CNC Routing CNC Milling
Applicable materials Primarily soft materials: wood, plastics, foam, aluminum, brass Soft and hard metals: steel, titanium, stainless, and more
Machine structure Gantry-style; lighter rigidity Heavy-duty frame; high rigidity
Spindle traits High speed, lower torque Lower speed, high torque
Work format Large-format sheets; large table area Typically block-shaped workpieces
Accuracy level Medium precision (around ±0.025 mm class) Micron-level high precision
Typical applications Furniture, signage, decorative panels, packaging molds Precision molds, aerospace parts, medical devices

Simply put: routers excel at “large and fast” sheet work; mills excel at “small and precise” hard-metal parts.

Where Routing Excels

AIHFABS CNC routing is especially strong in these application areas:

Advertising & signage

Acrylic cutting and 3D letter / character production for logos, light-box panels, and display graphics.

Furniture & cabinetry

MDF and solid-wood panel carving for cabinet doors, decorative panels, and custom furniture components.

Electronics enclosures

Aluminum and plastic shell milling for device housings, panels, and lightweight covers.

PCB prototyping

Circuit-board engraving and drilling for rapid PCB prototypes and isolation routing.

Machine Types

Type Characteristics Typical Uses
Desktop router Small footprint, low cost DIY projects, small parts, education
Industrial router High power, large format, higher rigidity Batch furniture and advertising signage
Multi-axis (3/4/5) Multi-axis motion for complex 3D shapes Sculptures, complex contoured molds
ATC (auto tool change) Automatic tool changes between operations Multi-step complex parts with less manual work
Nesting-optimized Intelligent nesting for material yield Cabinet doors and batch furniture panels

Core Processing Operations

Operation Description
Profiling Cut and form along the outer contour of the part
Pocketing Mill grooves or cavities inside the material
Drilling Through-holes or blind holes
Slotting T-slots, cable channels, and similar grooves
V-grooving V-bit engraving for text and decorative lines
Surface engraving Shallow engraving of text, logos, and patterns
3D carving 3D reliefs and sculptural forms
Chamfering Edge chamfers and bevels

Machinable Materials

Wood

  • Solid wood (hardwood / softwood)
  • Plywood (e.g. birch multi-ply)
  • MDF (medium-density fiberboard)
  • Particle board

Plastics

  • ABS, acrylic (PMMA), polycarbonate (PC)
  • HDPE, UHMW, PVC
  • Foam (EPS / polyurethane)

Soft metals

  • Aluminum alloys (6061, 7075, etc.)
  • Brass

Composites

  • Carbon-fiber board (CFRP)
  • Fiberglass (FRP)
  • Aluminum composite panels (ACM)

CNC routers are not suitable for high-hardness materials such as hardened steel or titanium alloys — choose CNC milling for those parts.

Core Advantages

Large-format machining

Table area far larger than typical mills — ideal for full-sheet cutting

Lower cost

Lower equipment and process cost than milling on soft materials

Fast production

High-speed spindles with ATC deliver high throughput

High material utilization

AI nesting can reach about 94%–97% sheet utilization

Strong repeatability

The same design can be replicated accurately in batch

Complex pattern capability

Excellent for intricate decorative patterns and 3D reliefs

Typical Application Industries

Industry Typical Applications
Woodworking & furniture Cabinet doors, table/chair parts, decorative panels, carving
Advertising & signage 3D letters, LED light-box bases, acrylic logos, display racks
Construction & décor Decorative wall panels, door carving, railing balusters
Automotive / aerospace Instrument panels, interior trim, carbon-fiber parts, battery housings
Mold making Thermoforming molds, casting molds, packaging molds
Electronics PCB prototypes, equipment housings, ceramic substrates
Medical devices MRI enclosures, surgical guides, equipment panels

Service Process

  1. Prepare design files Create 2D vectors (DXF, DWG, SVG) or 3D models (STL, STEP) in CAD.
  2. Upload for quote Submit files; quotes typically return within 12–24 hours.
  3. CAM programming Convert designs to G-code with toolpaths, feeds, and depths.
  4. Machining Clamp material, set tools, and run the program.
  5. Post-processing Sanding, polishing, painting, anodizing, and other finishes.
  6. Inspection & delivery Dimensional checks, reports, and shipping.

Cost-Influencing Factors

Routing cost is mainly driven by:

Material type

Wood is usually cheapest; carbon fiber and aluminum cost more

Part complexity

3D reliefs cost more than simple 2D cutting

Tolerance requirements

Tighter accuracy increases machining time

Batch size

Larger batches lower unit cost

Post-processing

Finishes and paint add extra cost

Equipment class

5-axis costs more than 3-axis; ATC raises efficiency and machine cost

Design tips

  • Account for kerf and tool diameter on tight nested profiles.
  • Add tabs or nesting bridges if parts must stay in sheet during cutting.
  • Specify grain or fiber direction for composites and wood.

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