Multi-Jet Printing (MJP) 3D Printing Service

Yes, the MJP 3D printing technology is highly suitable for manufacturing parts with movable components (such as hinges, rotating joints) or snap-fit connections – this is due to its high precision, the diversity of materials, and the controllable supporting structure.

Its 16-micron Z-axis resolution and tight dimensional tolerances (typically ±0.1mm for small parts) allow for precise gap control between moving components—critical to preventing binding or excessive looseness. For example, a hinge with a 0.1–0.2mm clearance (a common MJP design standard) can rotate smoothly without requiring post-print sanding in most cases.

You can integrate rigid resins for structural components (e.g., hinge frames) with flexible resins for wear-resistant or shock-absorbing parts (e.g., snap-fit latches), improving durability and functional longevity. Compared with FDM technology (in which the layered lines may hinder movement), the smooth surface treatment of MJP can also reduce the friction between moving parts, thereby extending their service life.

For optimal results, we recommend designing with: 1) Minimum clearances of 0.1mm between moving interfaces (adjusted based on part size); 2) Avoiding overly thin features (e.g., <0.5mm for hinge pins) that could compromise strength; 3) Using MJP’s soluble support resins for complex internal joints—these dissolve completely without damaging delicate structures, eliminating the risk of manual support removal breaking small components.

This combination makes MJP ideal for small mechanical parts (e.g., miniature gear assemblies), consumer electronics enclosures with snap-fit closures, or medical device components (e.g., adjustable instrument clips) where reliable movement and secure fastening are essential.

1. Printing Time (Core Production Phase)

• Small, simple parts: For compact components with minimal details (e.g., a 20mm×15mm×10mm electronic connector, or a basic snap-fit fastener), printing usually takes 12–24 hours. MJP’s layer-by-layer jetting is efficient for small builds, and simple geometries require less time for support structure generation and curing.
• Medium, moderately complex parts: For components with moderate detail or multi-material elements (e.g., an 80mm×50mm×30mm medical surgical guide with precision hole patterns, or a 100mm×60mm×40mm consumer device prototype with soft-touch grips), printing typically ranges from 24–48 hours. This accounts for the extra time needed to align multi-nozzle material deposition and cure intricate features.
• Large or highly complex parts: For larger builds or designs with extreme detail (e.g., a 150mm×100mm×80mm automotive interior functional prototype with integrated textures, or a 120mm×90mm×60mm multi-material mechanical hinge assembly), printing may take 48–72 hours. Larger build volumes require more layers to complete, while high complexity demands slower nozzle movement to maintain precision.

2. Quality Inspection

• Dimensional verification (using calipers or 3D scanners to confirm tolerances, e.g., ±0.1mm for small parts);
• Surface quality assessment (checking for defects like resin bleed or uneven curing);
• Functional testing (if applicable, e.g., verifying movement in hinge components or snap-fit retention).