Stereolithography (SLA) Printing Service

Process Details

Printer Type:

Digital Light Processing (DLP) is a variant of Stereolithography (SLA). It uses a digital projector screen to flash an image on a thin layer of photocurable resin layer. The platform on which the part is built repositions itself in the resin tank layer by layer. The 3D Systems™ Figure 4 system we use can print parts in small batches and is ideally suited for same-day prototyping and low volume production jobs.

Visual Aspect: 

DLP produces dense parts with high surface quality, dimensional accuracy and tight tolerances. Uncured resin is not self-supporting. Therefore, support structures must be created and the orientation of the part chosen carefully to minimize vestige marks after support removal.

Capabilities

Bounding Box:

4.9" x 2.8" x 13.6" (124 mm x 70 mm x 346 mm)

Resolution:

  • XY printing resolution .0025" (65 µm)
  • Typical layer thickness .0020" (50 µm)
  • Accuracy:

    +/- .004” (100 µm) for the first inch and +/- .001” for each additional inch (+/- 1 µm/mm). Part geometry, thickness, and orientation can have an effect on tolerances.

    Availability:

    Lead time will be indicated in your instant quote, typically 1 day.

    Materials

    Product Range: 

    • Our standard prototyping resin is Tough-GRY 15, a tough ABS-like resin which can easily be painted or plated. Tough-GRY 15 offers high strength and stability for short run production of rigid gray parts. With 35% elongation at break, this durable material produces highly accurate components.
    • Other resin choices are possible for volume orders.

    Design Guidelines

    Wall Thickness: 

    Minimum unsupported wall thickness .0236" (0.6 mm)

    Hole dimensions:

    Minimum hole diameter .039" (1 mm)

    Geometry:

    Additional design guidelines are available on your customer portal. We provide free DFM feedback on your designs.

    Applications

    Benefits: 

    DLP parts are dense and relatively isotropic, with excellent surface finish.

      Target markets:

      Form, fit and function testing, bezels, covers, cases, snap fit assemblies, painted or plated housings


    Recommended Resources

    Tough-GRY material datasheet

    Technical specifications

    Upload your CAD files for a free printability analysis

    Get DFM feedback, pricing and lead time in just a few clicks.