Additive production- 3D print

3D printing has been a very progressive manufacturing technology in recent years. Not long ago, it is not a futuristic production method from hi-tech development centers. Today, the competitive production 3D printing technology enables low-cost prototyping and economical small batch production.

Our prototype workshop is equipped with 3D printers for the fused deposition of thermoplastic materials FDM and stereolithographic 3D printer for printing from photo-sensitive photopolymer SLA. We also offer 3D printing by sintering of thermoplastic polyamide MJF and laser sintering of metal SLM. The materials we print can be found in the Materials section.

What we use 3D printing for

In our Protocast company we use 3D printing especially for production of master models from which we create silicone molds for vacuum casting of resins.

We also offer custom 3D parts printing, especially if:

  • customer needs small number of pieces
  • parts are unmanufacturable by an other technology
  • price calculation is cheaper than vacuum casting
  • special properties as refractory (240°C) is needed


FDM (Fused Deposition Modeling)

FDM is a very inexpensive and efficient 3D printing technology based on the principle of thin film coating of thermoplastic wire. The hot nozzle extrudes the thermoplastic bead and moves in space to create a computer-designed 3D model.

Discard prejudices about RepRap printers. Our perfectly adjusted Czech printers Prusa i3 MK3 with multi material can do wonders. We offer fast printing with an accuracy of 0.3 mm throughout the print volume, which will not burden your wallet. In addition, our 5 printers can print really fast.


Advantages and disadvantages of FDM 3D printing:

+ Very fast technology
+ Favorable price
+ Direct printing of industrial plastics as ABS, PE, PA (Nylon)
+ Possibility of material combination under one print
+ Possibility of printing large units
- Visible material layering
- Inhomogeneity strength - lower strength in Z axis
- The surface is wettable and leaks without surface treatment

Our FDM prints gallery

SLA (Stereo Lithography Apparatus)

Stereolithography is the oldest and still very modern 3D printing technology designed especially for parts with almost perfect surface. It is based on a very precise lightening of the light-sensitive resin. The laser beam shining into the tank with light-sensitive resin. At the point where the laser shines resin solidifies. The part is attached to the print pad, which slowly and upside down rises out of the resin tank to create a space to shine through the other layers of the workpiece.

We use the Form 2 printer from the American company FormLabs with a print volume of 150 x 150 x 175 mm.

With this technology, we print master models and prototypes that are as close as possible to injection molded plastics parts.


Advantages and disadvantages of the SLA 3D printing:

+  High precision 3D print
+  High surface quality
+  Print refractory materials (up to 240 °C)
+  Print transparent resin
-  High cost of light-sensitive resin
-  Low speed of printing
-  The part must have a hole through which the resin flows out of the cavities
-  Low temperature resistance of most materials


Our SLA prints gallery:

MJF (Multi Jet Fusion)

It is a technology patented by HP. A reagent is added in to the polyamide powder to help sinter the powder after UV light. In this way, a very rigid polyamide with much lower porosity is printed.

The technology can also be used for parts with internal channels or flexible joints. Can be printed with a layer thickness of up to 0.08mm. The resulting part has a smooth, stone-like surface with no visible layers. The surface can be sand blasted, sanded and painted - see our surface treatments surface treatments.

We use HP Jet Fusion 3D 4200 from Hewlett-Packard, California, with a print volume of 380 x 284 x 350 mm.


Advantages and disadvantages of MJF 3D Printing:

+  Extremely rigid and fully functional parts in all axis
+  Very economical printing of small-batches
+  3D print without supports
-  High machine cost
-  Rough surface
-  The part must have a hole through which the powder is poured out of the cavities



Our MJF prints gallery:

SLM (Selective Laser Melting)

Laser Sintering of powders is a technology introduced to the world in 1992. The machine applies a thin layer of powder to the printing area. The laser welds the material in place of final part and the machine re-applies another layer of powder.

With this technology we print individual pieces or small series of parts that are very demanding for machining. We can print cooling channels, complicated ribbing, or very complex parts unmanufacturable by another technology.

We print on AM250 from Renishaw, UK, with a print volume of 250 x 250 x 300 mm.


Advantages and disadvantages of SLM 3D Printing:

+  Extremly rigid and light parts
+  Precise 3D print of stainless steel and aluminium
+  Surface is equal to sand blasted surfaces
+  Price availability
-  Very complex printing system
-  High quality requirements for metal powder
-  The part must have a hole through which the powder is emptied from the cavities



Our SLM prints gallery:

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