About Aluminum

Aluminum is a light and strong material recommended for functional parts requiring high strength, stiffness, low weight and high accuracy. It's printed using a process called Selective Laser Melting. Aluminum (alloy AlSi10Mg, 10% Silicon 0.5% Mg) also has great corrosion resistance, making it an ideal material for outdoor applications, and high electrical and thermal conductivity. It can also be machined, milled and tapped.

Common Applications

Mechanical parts, Tools and Fixtures, Bike and Drone Accessories, Structural Components

Material Properties

High Strength & Lightweight
Good Corrosion Resistance
High Electrical & Thermal Conductivity

Handling and Care

Good Electrical Conductivity
Heatproof to 570C/1058F

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Frequently Asked Questions

How long will it take before I receive a model in this material?

The production time is 15 business days with Priority manufacturing. The shipping depends on your location.

How is this material made?

Aluminum is the only metal we offer that is fused and melted using a laser from a bed of metallic powder. The 劲爆体育在线直播 printing process is called selective laser melting.Fabrication takes place on a build platform with supports to anchor the part. A bed of aluminum powder sits above a build platform. One layer at a time, the powder is melted by a high powered laser. The melted powder is quickly cooled to solidify the metal. To form the next layer, the build platform is lowered and a new layer of powder is distributed with a coater. This process is repeated layer by layer until the part is complete. Horizontal areas and edges print with an automatically generated support structure to prevent the feature from sagging into loose powder. The support is then removed and polished away from the part during post-processing. Selective laser melting is unique because the high power laser provides enough energy to heat the aluminum powder above the melting point. This process fully melts the powder rather than just sintering it, creating a solid, homogeneous aluminum alloy.

Why is there a difference in surface structure?

On certain areas the surface can be slightly rougher than others, this is where supports were added during the process. The production planners do their best to orient your models optimally to minimize the amount of support structures needed. Complex geometries might have supports on hard to reach places, leaving an imperfect surface.

Technical Documents

More Materials

Decent Strength

Many Colors & Finishes

Complex Geometry

Tech Accessories
Home Decor
Binder Jetting
Smooth Finish
Good Strength & Durability
Good Value
Mechanical Parts
Structural parts
Multi-Jet Fusion
  • Bounding Box
  • Wall Thickness
  • Wires
  • Surface Details
  • Escape Holes
  • Clearance
  • Interlocking Parts
  • Multiple Parts
  • Accuracy
  • Design Tips
  • Pricing


250 x 250 x 200 mm
X + Y + Z > 30 mm

Your model should be within the minimum and maximum bounding box sizes. The maximum bounding box represents the largest model that our printers can produce or finish can be applied to. The minimum bounding box size is the smallest dimension in which we can print in this material.


Min Supported Wall Thickness
1.0 mm
Min Unsupported Wall Thickness
1.0 mm

A supported wall is connected on at least two sides. Walls in your model must meet the minimum measurements to ensure it survives the printing and cleaning process. Thin walls are prone to warping during printing and are fragile to clean. Objects that meet the minimum requirements may still be rejected based on the geometry in which case our production team will communicate with you if the design needs improvements and can assist you to strengthen your model. For large walls or walls bearing significant weight, we suggest increasing the thickness to 1.6mm.


Min Supported Wires
1.5 mm
Min Unsupported Wires
1.5 mm

A geometry is considered a wire when it is thinner in both unconnected directions than its length. Whether we are able to print the minimal thickness depends on the orientation of the part and whether supports are required on the feature. Our production team will communicate with you if the design is too weak with tips on how to strengthen it. For long wires or wires bearing significant weight, we suggest increasing the thickness to 2mm.


Min embossed detail
0.4 mm high & wide

0.5 mm high and 0.8 mm wide for readable text and clear
Min engraved detail
0.4 mm high & wide

0.5 mm high and 1.0 mm wide for readable text and clear

We recommend these minimum measurements for details like embossing or engraving, based off of printer resolution.


Single Escape Hole Diameter
4.0 mm
Multiple Escape Hole Diameter
2.0 mm

Escape holes allow unbuilt material inside hollow products to be removed.

A single escape hole at the end of a cavity will not allow material in the corners near the escape hole to fully escape. So we recommend multiple escape holes at both ends of the cavity.


0.6 mm

Clearance is the space between any two parts, walls or wires. If the clearance between two features or parts is too small bodies can be fused together.


Interlocking parts are possible, but enclosed parts are not. During the printing process, support structures are automatically generated and built around your object to prevent it from warping. These must then be removed so your product is true to the design. It is possible to create interlocking parts, but enclosed parts require support material that is impossible or very difficult to remove.




卤 0.2 mm for products under 10mm in all dimensions, 卤 1.5% for products over 10mm in any dimension


Print Lines or "Stepping"

A "staircase" effect and print lines, can occur on the surface of your print. These can become more pronounced on curved and angled surfaces.

Sharp Edges

After printing, aluminum products are blasted with aluminum-oxide-powder (corundum) to clean them. That means small sharp edges will be rounded off.
Edges and overhanging surfaces may be rough. Supports are required for overhangs in order to avoid sagging into the loose powder below. These support structures must be removed with a tool during post-processing. Surfaces which require support structures can be rough or show small imperfections due to the removal process.

Screws and Threads

Screws or parts with threads need to be highly accurate. Printed aluminum parts cannot achieve this. Therefore, a matching screw and nut set printed with the same nominal dimensions will not fit together. If you need a perfect functional threaded part or screw, we recommend thread cutting after you receive your print. A machining allowance must be taken into account according to the "聹classic" rules of thread cutting..

Design with Accuracy in Mind

When designing holes, textures, small gaps or notches, and filigree details, you will need to consider tolerances based on the accuracy of the process in order for the details to function as intended. Exact sizes cannot be achieved and fine textures will lose detail.

Support Structures

Overhangs on aluminum parts must be reinforced by a support structure. This aluminum support structure must be removed thoroughly and carefully after the build process. The now exposed surface is very rough and requires polishing. Therefore, areas where support needs to be removed must be accessible with tools like pliers and files.
Generally, all parts can be supported, but removing support structures can be impossible if they are in areas which are inaccessible. Additionally, filigree details can often be destroyed during this process. To ensure that all support structures can be removed without damaging the part, do not create filigree complex part details, especially in inaccessible areas.
Unfortunately, we cannot provide hard guidelines here because the amount of the necessary support can only be seen in the data preparation process and varies from part to part.


How will the price of my model be calculated?

  • Material Volume - the amount of material needed to 劲爆体育在线直播 print your product
  • Bounding Box Volume - the dimensions of your product used to determine the space it takes inside our 劲爆体育在线直播 printers
  • Number of parts - a part is a piece of a model that can be separated from other pieces of the model
  • Production - associated production costs including labor; quality control; machine maintenance; general utilities; and other supporting services required to 劲爆体育在线直播 print your product

What is the minimum price per part?

The minimum price per part is $15



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