Key Factors to Consider When Using MJP Process for 3D Printing: Ensuring Precision and Quality

 MJP (MultiJet Printing) is a versatile 3D printing technology known for its high precision and fast production of detailed parts. But to make the most of this technology, there are several important factors you need to pay attention to throughout the printing process. From choosing the right materials to post-processing the final model, each step plays a crucial role in achieving high-quality results. Let’s explore these key factors in detail.

Table of Contents

• Material Selection: Choosing the Right Photosensitive Resins
• Support Structure Management: Handling Waxy Supports
• Layer Thickness Control: Impact on Accuracy and Smoothness
• Post-Processing Steps: Enhancing Appearance and Detail
• Model Design: Leveraging MJP’s Detail Capabilities
• Printing Speed: Maximizing Efficiency for Time-Sensitive Projects
• Easy Operation: Navigating User-Friendly Software
• Environmental Control: Managing UV Light Exposure
• Equipment Maintenance: Ensuring Long-Term Performance
• File Format and Slicing: Preparing Models Correctly
• Testing and Calibration: Validating Settings Before Batch Printing
• Yigu Technology’s View
• FAQ

Material Selection: Choosing the Right Photosensitive Resins

The foundation of successful MJP printing lies in selecting the appropriate photosensitive resins. MJP technology relies on liquid plastics that cure rapidly under UV light to form precise layers, so the material’s properties directly impact the final part’s quality.

• Look for resins designed specifically for MJP printers. These resins are formulated to work with the technology’s UV curing process, ensuring proper layer adhesion and consistent results.
• Consider the functional requirements of your print. Some resins offer high detail for intricate models, while others provide better mechanical strength for functional prototypes. For example, if you’re printing a detailed architectural model, a resin with excellent fine-feature resolution is ideal. For parts that need to withstand minor stress, a more durable resin would be a better choice.
• Store resins properly. Since these are UV-sensitive materials, keep them in opaque containers away from direct sunlight or strong UV sources to prevent premature curing. This simple step can extend the material’s shelf life by up to 50%.

Support Structure Management: Handling Waxy Supports

MJP technology uses waxy support structures to shape complex models, and managing these supports correctly is essential for successful prints and easy post-processing.

• Understand how supports work. The waxy material is printed alongside the model material, providing stability for overhangs, thin features, and complex geometries. Unlike some other 3D printing technologies, MJP supports are designed to be easily removable after printing.
• Design with supports in mind. When creating your 3D model, consider where supports will be needed. Overhangs greater than 30 degrees often require support in MJP printing to maintain shape and prevent sagging. The software usually generates supports automatically, but you can adjust their density for better performance – a density of 15 – 25% balances support strength and ease of removal.
• Plan for post-processing removal. Waxy supports can typically be removed manually with tools like tweezers or brushes, or melted away using heat or solvents designed for MJP supports. This flexibility makes MJP a great choice for models with hard-to-reach support areas.