Appearance prototypes
Prototypes to show the shape and appearance of a product.
SLA resin · Custom parts
Smooth, finely detailed, and ready to paint. We print models and appearance prototypes in white resin by stereolithography, even large ones.
Get your quoteQuote in 24 h · Engineering review

01 / Why choose this material
White stereolithography resin with ABS-like behavior. It comes out smooth and finely detailed, and it is the ideal base for painting. It is the only resin that prints parts up to 1,650 mm in one piece.
White resin is printed by stereolithography: an ultraviolet laser cures the resin layer by layer. The surface comes out smooth and the details sharp, which is why it is used to show the shape of a product or to paint it. It is the only resin that prints parts up to 1,650 mm in one piece. For parts that work, choose Multi Jet Fusion.
Learn about the SLA 3D printing process ↗Reference · Somos® GP Resin
Photopolymer resin: it is not suitable for parts that work above 45 °C, in the sun for months, or under sustained loads. For functional parts, choose a Multi Jet Fusion material.
White resin applications
Prototypes to show the shape and appearance of a product.
Presentation and design validation models.
Parts to be painted in the final color.
Large one-piece models for trade shows or clients.
02 / A choice based on usage
These criteria help define the material, geometry, and working conditions before manufacturing.
01
It withstands 46 °C before deforming. Use it for models and appearance prototypes, not for parts in the sun, near heat, or under load.
02
It is the best base for painting in RAL or Pantone: the smooth surface needs little preparation.
03
Up to 1,650 × 760 × 580 mm in one piece. Beyond that, it is printed in sections that are then joined.
Indicate loads, temperature, environment, and appearance needed. If the drawing requires a specific grade, include it in the request.
03 / Finishing also counts
Define visible surfaces and the required result for your part. Requested treatments are included in the quote.
Smooth surface typical of stereolithography. Support marks are sanded; layers may be visible on curved surfaces.
The image could not be loaded. Try a different finish.
Reference images: material, geometry, and surface preparation influence the outcome. Special finishes are quoted upon request.
04 / From design to quote
Stereolithography builds the white resin part layer by layer: an ultraviolet laser cures the liquid resin on a platform. The part grows on thin supports that are then removed and sanded, and it gets a final cure with ultraviolet light.
Upload a 3D model per part, for example in STEP or STL. SLDPRT, X_T, X_B, IPT, CATPART, PRT, SAT, and 3DM files are also accepted. Add a PDF drawing with functional dimensions and assembly requirements.
Upload your file and request a quotePrinting tolerances depend on geometry, orientation, and material. Indicate assembly dimensions on a drawing for the team to confirm feasibility. CNC machining tolerances are not automatically applied.
The price per part usually varies little with quantity. Producing more units does not imply the volume savings achievable with machining or molds.
Parts from 7 working days after confirming the order. The quote specifies the lead time based on geometry, material, finish, and quantity.
How much it costs to manufacture
The price of printing white resin depends on material volume, geometry, build orientation, and post-processing. Quantity usually reduces the unit cost only slightly.
Check the catalog example to compare materials. To know the cost of your design, request a quote with your 3D file.
Frequently asked questions
Properties, applications, and manufacturing: answers to prepare your request.
White stereolithography resin with ABS-like behavior. It comes out smooth and finely detailed, and it is the ideal base for painting. It is the only resin that prints parts up to 1,650 mm in one piece. Photopolymer resin: it is not suitable for parts that work above 45 °C, in the sun for months, or under sustained loads. For functional parts, choose a Multi Jet Fusion material.
You can manufacture appearance prototypes, models, parts for painting, and presentation models. Stereolithography allows validating the appearance and detail of a part without manufacturing a mold. Define the loads, environment, and finish so we can review the application.
SLA resin comes out smoother and with more detail, but withstands less temperature and is more brittle. MJF PA12 is granular but tough and functional. Resin for showing; MJF for parts that work.
Yes, it is the best resin for painting. Proto&Go! paints it in RAL or Pantone with a matte, satin, or gloss finish. Specify the color when requesting the quote.
Up to 1,650 × 760 × 580 mm in a single piece. The other two resins have a smaller maximum size.
The price of printing white resin depends on material volume, geometry, build orientation, and post-processing. Quantity usually reduces the unit cost only slightly. Upload the 3D file to the Proto&Go! platform to receive a quote with cost and lead time.
Printing tolerances depend on geometry, orientation, and material. Indicate assembly dimensions on a drawing for the team to confirm feasibility. CNC machining tolerances are not automatically applied.
Upload a 3D model per part, for example in STEP or STL. SLDPRT, X_T, X_B, IPT, CATPART, PRT, SAT, and 3DM files are also accepted. Add a PDF drawing with functional dimensions and assembly requirements.
Your next part
Upload the 3D file. We review feasibility and send you the quote.
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