CNC Routing Aluminum from VT machining delivers precision Aluminum parts produced to your exact drawing. CNC routing cuts profiles and openings in sheet and plate at high feed rates with a rotating router bit, and we tune every parameter to the behaviour of Aluminum, which is lightweight, excellent machinability, good corrosion resistance.
Starting Parameters for CNC Routing Aluminum
| Cutting speed (carbide) | 440-1100 m/min |
|---|---|
| Feed per tooth | 0.035-0.14 mm |
| Spindle speed, Ø6 mm end mill | 23340-24000 rpm |
| Insert / tool class | ISO N — sharp, polished, uncoated or DLC |
| Coolant | Emulsion or MQL; polished uncoated or DLC tools |
Shown for 6061 Aluminum, the most common Aluminum grade we see for CNC Routing. Starting values for 6061 Aluminum, T6 / T651; optimised on the first article.
CNC Routing Capability for Aluminum
- High-feed profiling
- Sheet and plate stock
- Nested-part layouts
- Edge tolerance ±0.1 mm
Aluminum material properties, finishing options and grade notes are on our CNC Milling Aluminum page.
How CNC Routing Aluminum Works
Rotating multi-flute cutters remove material as the Aluminum workpiece is driven through programmed tool paths on 3-, 4- or 5-axis machining centres. Climb milling, step-over and depth-of-cut are set so chip load stays in the ideal band for the alloy.
Every job begins from your CAD model or 2D drawing. Fixturing and tool paths are planned so the most critical dimensions are produced in the most rigid, repeatable setup. Critical dimensions are checked on the first part and monitored through the run.
Achievable Tolerances for CNC Routing Aluminum
| Feature | Standard | Precision |
|---|---|---|
| Linear dimension (< 100 mm) | ±0.05 mm | ±0.010 mm |
| Linear dimension (100–300 mm) | ±0.10 mm | ±0.025 mm |
| Hole diameter (reamed) | H9 | H7 |
| True position of hole pattern | ±0.10 mm | ±0.025 mm |
| Flatness over 100 mm | 0.05 mm | 0.015 mm |
| Perpendicularity | 0.10 mm | 0.020 mm |
| Surface finish, as machined | Ra 1.6 µm | Ra 0.4 µm |
Standard is what a normal quotation assumes. Precision is available on nominated features and is priced separately, because it needs extra setups, in-process gauging and CMM verification. Call out only the features that need it — blanket-tightening a drawing is the single most common reason a quote comes back expensive.
Design Tips for CNC Routing Aluminum
A few design choices make a real difference to cost and quality. Generous internal radii, sensible pocket depth-to-width ratios and avoiding very thin unsupported walls all reduce cost and improve accuracy in Aluminum. If you send your model early, we will return practical DFM feedback before you commit to production.
CNC Routing Tolerances & Surface Finish
For CNC Routing, dimensional and positional tolerances around ±0.01 mm are routine, tightening toward ±0.005 mm on precision setups. Surface finish on machined faces typically falls in the Ra 0.4–1.6 µm range depending on tooling and pass strategy.
Final tolerances are governed by the material's behaviour, wall thickness and overall stiffness. We give honest DFM feedback if a callout would be costly or better achieved another way.
Applications of CNC Routing Aluminum
CNC Routing of Aluminum supports parts across aerospace, medical, automotive, electronics, semiconductor, energy and general industrial sectors. We scale from one-off prototypes to ongoing production while holding the same quality.
Typical Aluminum Parts for CNC Routing
Illustrative examples of CNC Routing Aluminum parts and the callouts that usually drive the process plan. They show the kind of work that fits this process; they are not specific customer orders.
Manifold block
- Material
- Aluminum
- Size
- 120 × 60 × 45 mm
- Key callouts
- Cross-bore intersection ±0.05 mm, ports G1/8", leak-tested to 10 bar
- Batch
- 80 pcs
Deburred internally with a brush tool; a burr at a cross-bore is what fails the leak test.
Heat sink base
- Material
- Aluminum
- Size
- 200 × 100 × 8 mm
- Key callouts
- Fin thickness 1.2 ±0.05 mm, base flatness 0.03 mm
- Batch
- 500 pcs
Fins cut with a slotting cutter in one pass to avoid the deflection a step-over leaves.
Vacuum chamber flange
- Material
- Aluminum
- Size
- Ø180 × 20 mm
- Key callouts
- Knife-edge seal Ra 0.4 µm, bolt circle ±0.05 mm
- Batch
- 60 pcs
Sealing face finished last, then handled in gloves and bagged straight off the machine.
No drawing yet? Build one in the browser.
Set the metal, dimensions and features, watch the 3D model update as you type, then switch to the 2D sheet to add dimensions and tolerances. Download it or send it straight to us with your RFQ.
What We Need to Quote CNC Routing Aluminum
- GeometrySTEP or IGES for the 3D model, plus a PDF drawing if you have tolerance callouts. A dimensioned sketch is enough to start.
- MaterialThe exact Aluminum grade and condition — temper, heat-treat state or hardness. If you are not sure, tell us the function and we will suggest one.
- QuantityPrototype count and the expected annual volume. Both change how the part is made and therefore what it costs.
- TolerancesWhich features are critical. Everything else runs to our standard tolerance, which is what keeps the price sensible.
- FinishSurface treatment, cosmetic requirements, and any faces that must be masked.
- DocumentsWhether you need a material certificate, dimensional report, FAIR or PPAP with the shipment.
Missing something from the list is not a problem — send what you have. We will come back with the specific questions rather than a generic form.
Other Metals for CNC Routing
Other Processes for Aluminum
Send the drawing, the Aluminum grade and the quantity. You get pricing, lead time and any DFM notes back — usually within one business day.
Request a QuoteFrequently Asked Questions
Which industries use CNC Routing Aluminum parts?
CNC Routing Aluminum parts are used across aerospace, medical, automotive, electronics, semiconductor and general industrial sectors — anywhere precise Aluminum components are required.
How clean are the edges produced by CNC Routing on Aluminum?
Machined Aluminum edges are clean and to specification; edge-break or deburring is added when your drawing calls for it.
Does CNC Routing Aluminum require dedicated tooling?
Most Aluminum machining work uses standard cutting tools and CNC programs; dedicated fixtures are made only when geometry or volume requires them.
Can VT machining make custom Aluminum parts to my drawing?
Yes. Aluminum machining is made to order from your CAD/2D drawing. Share your geometry, material grade, tolerance and quantity and we will confirm feasibility, lead time and pricing.
Why is Aluminum a good choice for CNC Routing?
Aluminum is lightweight, excellent machinability, good corrosion resistance, which makes it well suited to CNC Routing. We tune the process to the alloy so the finished Aluminum machining part meets your dimensional and functional requirements.
What material thickness or size range suits CNC Routing Aluminum?
We machine Aluminum across a broad size range; share your part envelope for confirmation.