We still leading the way

Prototal was one of the first prototype manufacturers in Europe with a 3D printer. As far back as the 1980s, we were printing parts for engineers, consultants and buyers across Scandinavia. And we still lead the way to this day. Once you select us as your supplier for your prototypes, you will be getting more than just the prototype itself. You will get our experience, knowledge and the security that we will fully understand your future manufacturing process.

SLA - stereolitography

Stereolithography, SLA, is used when you need surface and dimensional accuracy and richness of detail. SLA is also optimal for design models and master pattrern for casting moulds. Prototypes can be tailored using different materials in order to achieve the desired transparency, flexibility or rigidity. In the case of design models, the parts are finished and coated so that they are as close to the final product as possible. We can also add different surface structures, graphics, prints or colours. SLA is just one of our rapid prototyping / additive manufacturing / 3D printing options.

SLS - selective laser sintering

Selective laser sintering, SLS, is used in situations where the function and rigidity of the prototype are important. By selecting the right material, the flexibility, rigidity and resistance to ageing can all be tailor made for your part. SLS is the best choice when you need your product to be made in a durable material. SLS is a free form manufacturing method which uses your CAD file directly to create the product without the need for a mould. 
Different types of post treatment can be then used, for example, to make design models. In such cases, the parts are finished and coated so that they are as close to the final product as possible. We can also add different surface structures, graphics, prints or colours. SLS is just one of our rapid prototyping / additive manufacturing / 3D printing options.

MJF - multi jet fusion

Multi jet fusion, MJF, is the new SLS tecnique

With amazing speed and resolution, the MJF printer sets a new standard for what is possible in 3D printing. The machine is ideal for prototypes as well as series production in numbers previously unaffected by additive manufacturing.

The machine also offers finer detail and resolution than corresponding methods using thermoplastic. Details are printed in PA12 and have properties that exceed selective laser sintering, SLS.

The printed models can, for example, be infiltrated, painted, dyed or grinded to obtain the desired surface.
MJF is one of several options in Rapid Prototyping / Additive Manufacturing / 3D Printing.

SLA - technical data

The machine consists of a vat which is filled with a liquid epoxy resin. A building platform lowers down gradually into the vat. A UV laser hardens the material layer by layer according to the information in the sliced CAD file. Once the process is complete, the parts are removed from the platform, cleaned and then cured in an UV oven. Finally, agreed post treatment is done on the parts, e.g. finishing, blasting and painting.

Tolerance: min ± 0.1 mm plus ± 0.15% of dimensions. Smaller tolerances upon agreement.
The minimum X/Y axis wall thickness is 0.25 mm. The minimum Z axis wall thickness is 0.4 mm.
There is a risk of increased tolerances in the case of cutted and bonded parts.

SLS - technical data

The machine has chambers which are filled with very fine grain powder. Between these chambers is a building platform which gradually lowers. For each layer, a new layer of material is applied on top. A CO2 laser sinters the desired areas of the material layer by layer according to the information in the CAD file. Unsintered material around the part act as a support structure during the process. Once the process is completed, the parts are removed from the bed and brushed or blasted clean of unsintered material. Finally, agreed post treatment is done on the parts, e.g. finishing, blasting and painting.

Tolerance: min ± 0.2 mm plus ± 0.25% of dimensions. Smaller tolerances upon agreement.
The minimum X/Y/Z axis wall thickness is 0.6 mm.
There is a risk of increased tolerances in the case of cutted and bonded parts.

MJF - technical data

As with SLS technology, MJF puts out powder of material with a thickness of between 0.07-0.10mm. But there ends the similarity.
At the next stage of the process, two different liquid agents are applied - through print heads with a resolution of 1200 dpi. A "Fusing agent" is applied where the material is to merge and a "Detailing Agent" is applied to areas that do not merge.
Thereafter, energy is added in the form of heat that causes the powder to melt where "Fusing Agent" has been applied. The process is then repeated with a new layer of powder. After completion of the process, the parts are removed from the building surface, they are brushed and blown clean from powder. Finally, agreed finishing is carried out, such as grinding , dying or painting.

Tolerances MJF min ± 0.2 mm and ± 0.25% of dimension. Smaller tolerances upon agreement. The minimum wall thickness in x / y / z is 0.5 mm. Detailed detail down to 0.1 mm.
There is a risk of increased tolerances in the case of cutted and bonded parts.

SLA - machine capacity

1 x SLA Viper
Build volume 254 x 254 x 250 mm

1 x ProJet HD 7000
Build volume 381 x 381 x 260 mm

3 x SLA 5000
Build volume 508 x 508 x 450 mm

2 x iPro 8000
Build volume 650 x 750 x 550 mm

Larger parts are produces in smaller sections and glued together.

 

pdf  Datablad

SLS - machine capacity

1 x SLS Vanguard
Build volume 330 x 380 x 400 mm

1 x SLS Vanguard Highspeed
Build volume 330 x 380 x 400 mm

3 x SLS Formiga P100
Build volume 200 x 250 x 330 mm

8 x SLS P3xx
Build volume 340 x 340 x 600 mm

4 x SLS P7xx
Build volume 700 x 380 x 580 mm

Larger parts are produces in smaller sections and glued together.

 

pdfDatablad

 

MJF - machine capacity

3 x HP Jet Fusion 4200
Build volume 350 x 284 x 380 mm

Larger parts are produces in smaller sections and glued together.

 

pdfDatablad