3D-Druck XXL in Leipzig, Pistol GmbH

The PISTOL GmbH produces models with the VX 1000 3D printer by Voxeljet for investment casting prototypes, casting tests, pilot and small series, and single-part production.

The Process

Polyacrylic powder (PMMA) is spread out in thin layers in the printer‘s building space and using a printing head the CAD specifications of the model are printed with a binder. The model takes shape and is built upwards by lowering the workbench and printing the subsequent layers. Then, the finely porous PMMA model is infiltrated with wax so that its surface is sealed and smooth.

XXL 3D Printing

Advantages

- Extremely detailed accuracy as a result of precision layering, optimally    suited for complex thin-walled and highly structured components.
- Realisation of undercuts without water-soluble cores.
- The model is produced in parts for ceramic cores. The model parts are    joined after core insertion.
- In terms of the fragility of complex ceramic cores, it is better when they    are not exposed to the pressure involved with mould filling a wax    pattern die.

- The PMMA model reduces its volume when it warms up to approximately 70°C allowing it to avoid ruptures in the ceramic bowl.
- Models are delivered only a few days after placing an order.

Our Services

- Over 20 years of expertise in investment casting
- Special material, Polypor C, excellently suited for the process of investment casting
- Post-processing
- Customer support throughout the entire project
- Assistance with designing parts as early as in the RP phase
- Provision of a variety of RP processes from one source

Technical Data

- Building space of the VX 1000 (LxWxH): 1,000 x 600 x 500 mm
- Thickness of a layer: 100-300 µm
- Building progress: 36mm/h ˜2.3 l/h
- Precision: 0.3 % (min. ± 100 µm)#
- Particulate material: PMMA powder (85µm)#
- Binder: Polypor C
- Tensile strength: 3.7 MPa
- Curing temperature: 600°C
- Softening temperature: 70°C
- Residual ash content: <0.02%