SLA (Stereolithography Apparatus)

TrayoTek deliver SLA (Stereolithography Apparatus) 3D Printing services that are accurate, efficient, and cost-effective.

SLA Stereolithography

Stereolithography Apparatus also known as SLA (Stereolithography Apparatus ), is a 3D printing process that converts UV-sensitive photopolymer liquid resin into solid parts, layer by layer, by selectively binding the liquid together using a UV laser beam in a process known as photopolymerization.

SLA (Stereolithography Apparatus) 3D Printing Services

The build platform is positioned just above the tank of liquid resin with one layer of the liquid resin on the platform. The UV laser then selective cures or binds the liquid together in a predetermined path. Once the layer is complete the build platform lowers itself into the liquid tank another layer. This process continues till the part is complete.

The liquid resin is composed of chemicals that are activated by the light of a UV laser and bind together to become solid. This process is irreversible and there is no way to convert SLA parts back into liquid form: when heated, they will burn instead of melting. This is because the materials that are produced with SLA are made of thermoset polymers, as opposed to the thermoplastics that FDM uses.

SLA technology is capable of making highly accurate and precise parts with speed while also creating the smoothest surface finish parts of all 3D printing processes. SLA parts are generally brittle and degrade overtime if exposed to sunlight making them unsuitable for functional prototypes.

SLA 3D Printing Applications

  • Master copies for vacuum casting and other low-volume prototyping techniques
  • Patterns for investment casting
  • Low volume/ limited edition products especially for complex geometries
  • Dental/ jewelry/ art and other sectors which require high detailing and finish
  • Visual prototypes for photo shoots and market testing
  • Parts with high dimensional accuracy with intricate details
  • Low-volume production of complex geometries
  • Parts for testing form, fit, and assembly

Technical requirements For SLA

Standard Lead time: Minimum 4-5 working days depending on part size, number of components, and finishing requirements lead time may increase.

Standard Accuracy: ± 0.025mm – 0.05mm

Layer thickness (resolution): 0.016 mm

Minimum Wall thickness: 1mm

Max dimensions: 330mm x 185mm x 400 mm. Large parts can be created by assembling individual parts by interlocking designs or gluing them together.

Surface finishing and Post Processing: Unfinished parts typically have visible building layers on the surface but post-production finishes can achieve different effects, from high glosses to coarse textures. SLA parts can be sandblasted, smoothed, colored/impregnated, painted, varnished, covered, and coated

Suitable Materials for SLA

  • Clear resin
  • ABS-like White Resin
  • Grey Resin
  • Flexible Resin
  • Castable wax Resin

We excel in the following areas:

  • Engineers who are multi-skilled, qualified, and experienced.
  • Open to using a range of software and dealing with a variety of tasks.
  • The final product is of high quality and satisfies all of the requirements.
  • Dedicated system for quality control.
  • Promise reliable solutions as per client requirements.
  • 3D parameter-based modeling, library and free-form surface modeling, 3D printing modeling, technical documentation, rendering, and animation are all technical skills.

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