Aluminum machines — it doesn't print
We get the request constantly: "Can you 3D print this aluminum part?" On a standard prototype line, aluminum is a metal and is machined. A printed nylon or resin part might look close on a screen, but the moment it has to bolt into an assembly or carry a load, the material simply is not the same. Machine it for function; print a look-alike only for a visual demo.
| Grade | Use it when | Notes |
|---|---|---|
| 6061 | Default for most prototypes | Good strength, anodizes well, geometry-friendly |
| 7075 | You need extra strength | Stronger, harder to machine, more stress-prone |
| 5052 / 6082 | Formability or EU-spec parts | Selected case by case |
Where CNC pulls ahead
Surface finish options
Bead blasting gives a uniform matte; anodizing (clear or colored) adds corrosion resistance and color; plating delivers a metallic look. All are standard and repeatable in-house.
Tolerance
Around ±0.05 mm is routine on aluminum, which is why machined parts are preferred for threaded inserts and mating features.
Lead time
Simple parts typically run 2–4 days including programming and fixturing. Geometry complexity and finish choice move that window.
When printing still helps
If the part only needs to look like aluminum for a demo, we can print a stand-in — usually cheaper than you would think. See our print vs machine guide.
Material and process fit
Grade selection
We read your STEP file and recommend 6061 vs 7075 based on load and geometry — not a default guess. See our materials & R&D.
Finishing chain
Machine → bead blast → anodize → assemble under one roof, so one party owns the result. See our technology.
Hybrid paths
For printed masters needing machined accuracy, we CNC critical surfaces after printing. Combines geometry freedom with tight limits.
Common questions
Not on a standard prototype line. Aluminum is a metal and is machined, not printed. A printed nylon or resin part may look similar on screen, but once it must bolt into an assembly or carry a load, the material is not equivalent. Machine it for function, or print a look-alike for a demo.
6061 is the default: good strength, easy to anodize, friendly to most geometries. 7075 is stronger but harder to machine and more prone to stress cracking, so we use it when the part truly needs the extra strength.
Bead blasting for a uniform matte, anodizing (clear or colored) for corrosion resistance and color, and plating where a metallic look is needed. All are standard and repeatable in-house.
Around ±0.05 mm is routine on aluminum with CNC, which is why machined parts are preferred for threaded inserts and mating features.
Simple parts typically run 2-4 days including programming and fixturing. Lead time depends on geometry complexity and finish.