Rapid prototyping

Rapid prototyping

Rapid Prototyping (RP) can be defined as a group of techniques used to quickly fabricate a scale model of a part or assembly using three-dimensional computer aided design (CAD) data. What is commonly considered to be the first RP technique, Stereolithography (SLA), was developed by 3D Systems of Valencia, CA, USA, founded in 1986, and since then, a number of different RP techniques have become available, such as SLS, FDM, 3D printing, etc. At Honkia, our rapid prototyping processes include: SLA/SLS, CNC Prototyping and Vacuum Casting.


SLS rapid prototyping

SLA (stereolithography) is an additive manufacturing process which employs a vat of liquid photosensitive polymer "resin" and an ultraviolet laser to build the part layer by layer. For each layer, the laser beam scans a cross-section of the part pattern on the surface of the liquid resin, exposed resin to the ultraviolet laser light cures and then joins to the layer below. After one layer finished, the elevator platform descends by a distance equal to the thickness of a single layer, typically 0.1 mm. Then, a resin-filled blade sweeps across the solidified cross-section of the part and recoat it by a new layer of fresh material to be scanned till finishing the part.

SLS rapid prototyping

SLS (Selective Laser Sintering) is an another additive manufacturing technique that it is similar to SLA process, which uses a laser light as the power source to sinter powdered material in plastic or metal. The laser selectively fuses powdered material by scanning cross-sections generated from a 3D digital description of the part on the surface of a powder bed. After each cross-section is scanned and sintered, the powder bed is lowered by one layer thickness, also typically 0.1mm, a new layer of powder material is applied on top, then the process is repeated until the part is completed.


SLA prototyping

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