Published on Tue Mar 01 2022 14:14:29 GMT+0000 (Coordinated Universal Time) by Alex

Diving Deep: The Voxeljet VX1000 – A Powerhouse in Binder Jetting

The Voxeljet VX1000 stands as a significant player in the world of industrial 3D printing, particularly within the binder jetting technology space. This machine isn’t your desktop FDM printer; it’s a powerful, large-format system designed for demanding applications requiring high volumes and intricate geometries. Let’s explore the VX1000 in detail.

What is Binder Jetting?

Before diving into the specifics of the VX1000, it’s helpful to understand binder jetting technology. Instead of melting plastic filaments (like FDM) or using lasers to cure resin (like SLA), binder jetting utilizes a liquid “binder” to selectively join powder particles together, layer by layer. Once the printing process is complete, the unbound powder is removed, leaving behind a “green part.” This green part is then typically sintered (heated in a furnace) to fuse the particles together, creating a dense, functional object.

Voxeljet VX1000: Core Strengths

The VX1000 excels at producing large and complex parts quickly and cost-effectively. Its key advantages lie in its large build volume, supportless printing process, and ability to use a wide range of materials. These features make it ideal for applications in aerospace, automotive, foundries, and art/architecture.

Detailed Specifications:

• Technology: Binder Jetting
• Build Volume: 1060 x 600 x 500 mm (41.7 x 23.6 x 19.7 inches) - Arguably its most defining feature
• Layer Thickness: Variable, typically ranges from 150-300 µm (0.006 - 0.012 inches) depending on the material and application. Finer layers offer improved resolution, while thicker layers improve print speed.
• Materials: Sand (for casting molds and cores), PMMA (polymethyl methacrylate) (for investment casting patterns), ceramics, and potentially other materials depending on specific machine configuration and binder used.
• Printhead: Multi-nozzle printhead for high-speed binder application. Voxeljet uses proprietary printheads optimized for specific materials.
• Resolution: Dependent on material and layer thickness but generally provides excellent dimensional accuracy for industrial applications.
• Data Preparation Software: Voxeljet provides dedicated software solutions for preparing 3D models, optimizing build parameters, and managing the printing process.
• Machine Dimensions: Significant - this is an industrial machine. Expect a large footprint requiring dedicated space. Exact dimensions will vary depending on configuration.
• Power Requirements: Substantial, requiring industrial power supply.
• Operating Environment: Requires a controlled environment to maintain optimal powder handling and print quality.

Usage Tips for Optimal Results:

• Material Selection: Choosing the correct material is paramount. Consider the application, desired mechanical properties, and post-processing requirements when selecting a material. For instance, sand is ideal for casting, while PMMA provides excellent surface finish for investment casting patterns.
• Part Orientation: While binder jetting doesn’t require supports, part orientation still matters. Orient parts to minimize overhangs and maximize surface area in contact with the powder bed for improved dimensional accuracy.
• Sintering Process: The sintering process is crucial to achieving the desired final part properties. Follow Voxeljet’s recommended sintering parameters for the chosen material to ensure proper densification and minimize distortion.
• Post-Processing: Parts often require post-processing, such as cleaning, infiltration (for certain materials to improve density), and surface finishing. Plan for these steps in your workflow.
• Powder Handling: Proper powder handling is essential for consistent print quality and machine longevity. Implement procedures to prevent contamination, ensure proper powder distribution, and manage powder recycling.
• Calibration and Maintenance: Regular calibration and maintenance are critical for optimal performance. Follow Voxeljet’s recommended maintenance schedule to ensure accurate printing and prevent costly downtime.
• Software Mastery: Invest time in learning the Voxeljet software. Understanding its features and optimization tools will significantly improve print quality, reduce material waste, and streamline the overall process.
• Consult with Voxeljet: Don’t hesitate to leverage Voxeljet’s expertise. Their application engineers can provide valuable guidance on material selection, process optimization, and troubleshooting.

The Voxeljet VX1000 is geared toward industrial applications and as such it is scored on the following things:

Rating the Voxeljet VX1000 (Out of 10)

• Print Quality: 9 - Exceptional dimensional accuracy and surface finish for industrial applications.
• Build Volume: 10 - The massive build volume is a defining characteristic and major strength.
• Printing Speed: 8 - Relatively fast compared to other industrial 3D printing technologies, especially for large parts.
• Material Compatibility: 7 - Limited compared to some technologies, but excellent for sand, PMMA, and ceramics. Dependent on specific machine configuration.
• Bed Adhesion & Leveling: 10 - Inherent advantage of binder jetting - no bed adhesion issues due to powder bed system.
• Reliability: 8 - Industrial-grade components contribute to high reliability, but regular maintenance is crucial.
• Ease of Use: 6 - Requires specialized knowledge and training. Not a beginner-friendly system.
• Firmware and Software: 8 - Robust software suite with advanced features for process control and optimization.
• Connectivity Options: 7 - Standard industrial connectivity options for network integration.
• Build Quality & Durability: 9 - Built to withstand demanding industrial environments.
• Noise Level: 6 - Noise levels are present due to moving parts and air handling systems.
• Maintenance Requirements: 7 - Requires regular maintenance and cleaning to ensure optimal performance.
• Customer Support: 8 - Voxeljet offers comprehensive customer support and training programs.
• Upgradeability: 6 - Limited upgrade options due to the integrated nature of the system.
• Price to Performance Ratio: 7 - High initial investment, but excellent performance for specific industrial applications where its capabilities are needed.

Overall Average Score: 7.73/10

Conclusion:

The Voxeljet VX1000 is a formidable industrial 3D printer designed for large-scale production of complex parts using binder jetting technology. Its large build volume, high printing speed, and material versatility make it a valuable asset for industries requiring high-volume, customized parts. While it demands specialized knowledge and a significant investment, the VX1000 delivers exceptional performance and unlocks new possibilities for manufacturing innovation.

Written by Alex