SLA 3D Printing Service

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cost-effective SLA 3D Printing Service with a lead time commitment.

Stereolithography (SLA) 3D printing is popular for its ability to produce highly accurate, isotropic, watertight parts with fine features and a smooth surface finish. In SLA, liquid photosensitive resin is cured with UV light to form a solid layer. The layers with pre-defined shapes are deposited over each other to create a form. We provide adapt SLA 3D printing services in Pune for various fields of application such as jewellery, functional parts or batch production. Click on the Get a Quote button to order your parts with ease.

SLA Capabilities

Maximum Build Size Minimum Resin Temperature Dimensional Accuracy Average Lead Time
150mm X 150mm X 200mm
25 °C*
± 0.15% with a lower limit
of ± 0.01 mm (±0.0003937008″)
2 Business days

*Approximate value. Depends on the material.

SLS Materials

Material Name


Maximum Service Temperature

Ultimate Tensile Strength

Elongation at break

Standard Resin


73 °C
65 MPA
6.2 % 6.2%

ABS-Like Resin


62 °C
52 MPA
20 % 20%



86 °C
76 MPA
24 % 24%

Castable Resin


45 °C
19 MPA
3 % 3%

The standard test methods are used to determine mechanical properties

  • ASTM D638 – Standard Test Method for Tensile Properties of Plastics
  • ISO 527-1:2012 – Determination of tensile properties. General principles

SLA Post Processing Options

Removal of the support structure is the most basic form of post-processing. Support removal is an easy process unless there are supports in hard-to-reach places.

Exposure to UV light triggers the formation of additional chemical bonds within a 3D printed part. UV curing is used to make the material stronger and stiffer. SLA 3D prints can have a slightly rough surface, and sanding is the easiest way to smooth it

Priming and painting post-processing methods are for enhancing the look, adding colour, as well as the finish of a part. Priming and painting are not recommended for tolerance sensitive 3D printed parts. We have a team of skilled creators for professional priming and painting services. Just upload the 3D model and list the colour of your choice to receive an instant quotation.

Epoxy coating of 3D printed model is carried for improving strength and adding a durable protective layer. But this post-processing method seals all porous parts of the print. This is not a finishing technique so the layer line still may be visible. We provide epoxy coating as an optional post-processing service for SLA 3D printing in Pune facility.



SLA Design Guidelines

  • Shrinkage

    This shrinkage is a direct result of the transition from liquid state to solid state during the SLA 3D printing process. 3D printed photosensitive resin materials will shrink during the printing and curing process, usually, the linear shrinkage is about 3%. Shrinkage can also take place in region of unsupported span. We take care of shrinkage through slicer settings and support optimization, so all the 3D printed parts by DigiPro 3D are within the tolerance limit.

  • Minimum Wall Thickness

    The minimum wall thickness allowed in SLA 3D printing is 1 mm in order to have good strength for final printed part. For a part with high aspect ratio the wall thickness should be increased for adequate strength.

  • Hole Orientation

    It is recommended to have holes parallel to the build plate for maintaining accuracy and printability. To attain tight tolerances, holes will be drilled or reamed to ensure the diameter is as designed. Hole diameter of at least 0.2mm, anything below that is difficult to achieve and possibility of visibility of that feature is very less.

  • Threads

    For fine threads in SLA, it is more appropriate to incorporate a metal insert into your design, which is added after your part has been 3D printed. It is possible to 3D print functional threads if the pitch is more than 2.5mm. When designing built in thread, creating an ACME thread design with rounded roots and crests has been found to work well

  • 0.2 mm

    Text and small details

    Texts and small details are quite easy to 3D print in SLA 3D printing. Minimum suggested text width for embossing and debussing must be 0.2 mm and protrusion 0.2 mm to be legible and avoid unexpected errors.

  • Overhangs

    When the printed layer of material is only partially supported by the previous layer, it's considered an overhang. Any unsupported overhangs must be kept less than 1.0 mm in length and at least 19° from level. Supports consumes significant material and time in SLA process, it is advised to optimize overhangs with fillets and chamfers before printing.

  • Fillets and Ribs

    Thin walls with high aspect ratio should be supported with fillets or ribs to avoid mechanical failure. Fillets helps to reduce stress concentrations along the joint. Ribs provide stiffness to the thin walls. At DigiPro 3D, we can print fillet as small as 0.3 mm.

  • Infill

    In SLA 3D printing parts are hollowed or have less infill as it saves cost and helps in avoiding shrinkage in thicker section. For hollow part, we will need to integrate drainage or escape holes to remove the excess resin inside the part after the printing process has been finished. The position of drainage holes depends on size and orientation of the part. However, our experienced production team will place the holes on the surface which is the least visible or that is easier to fill in post processing.

  • Orientation

    The accuracy of the parts is better in the XY plane than in the Z direction. Features that require the highest resolution should be placed in the XY plane. In order to avoid stair stepping with curved or sloped surfaces, do not position those surfaces with angles less than 30 degrees.

  • FDM Design Guidelines assemblies #1


    In case of SLA printed parts there should be at least 0.2mm clearance for assembly connections. For moving parts in assemblies the clearance should be 0.5 mm and for push fit assemblies it should be 0.1 mm.

  • Post-processing

    Parts manufactured by the SLA 3D printing method can be subjected to various post-processing including machining operations such as drilling and tapping, turning, and milling. DigiPro 3D provides services for surface finishing like smoothing, burnishing, sealing and plating.

General SLA Tolerances

SLA tolerances are given below, tighter tolerance may be offered on a case-by-case basis.

Applications of SLA

Benefits of SLA

SLA has the highest tolerance of commercially available 3D printing technologies with the lowest possible resolution of 100 microns. It is possible to manufacture parts with a very realistic finish and appearance comparable to traditional manufacturing methods like machining, injection moulding, and extrusion.

Due to the specific material composition used in SLA 3D printing, resin molecules form a covalent bonds within and across layers during printing and post-processing respectively. Creating isotropy and water tightness to the part upon final cure. This results in parts with predictable mechanical performance critical for industrial applications.

With progress In SLA, technology printing has become fast because they use light sources aimed at specific target areas. The use of photopolymer allows the UV light to cure the material in a short period of time. We maintain an in-house facility of fast and precise  SLA in Pune, get in touch with us for your 3D printing requirements.

Use our expertise in designing for Stereolithography

Design for Manufacturing Services

Our design team can optimize CAD models for functionality and cost. Companies can collaborate with us to enhance designs or quickly implement changes before manufacturing parts.