Sandblasting (unified texture)
It is used to reduce the graininess of the powder surface and unify the matte texture; it is more suitable for delivering purpose parts and functional parts with a cleaner appearance.
HP MJF Nylon PA12-Dyed Black
HP MJF Nylon PA12-Dyed Black based on HP MJF process, its advantages lie in "batch consistency" and "dimensional stability."
Quote checklist: Upload your 3D model and, when available, a 2D drawing. Identify the required process, material, quantity, critical dimensions, finish, appearance standard, and target delivery date.
Key Material and Manufacturing Parameters
Engineering note: Values below are typical reference ranges. Final manufacturability, tolerances, material condition, surface finish, cost, and lead time depend on the drawing, geometry, quantity, and selected process.
Upload CAD files and mark critical features for an engineering review before production.
| Process | HP MJF 3D printing (nylon powder molding) |
|---|---|
| Color | Black (more resistant to dirt, suitable for on-site use and delivery; sandblasting/painting optional if a uniform texture is required) |
| Dimensional accuracy | ±0.2 mm (common reference; for critical assembly dimensions, it is recommended to mark tolerances in 2D drawings and note "key dimensions first") |
| Minimum wall thickness | 0.8mm (common reference; it is recommended to thicken or reinforce the stress-bearing structure) |
| Service temperature | About 120℃ (common reference; continuous high temperature/long-term thermal load is recommended to explain the working conditions for evaluation) |
| Tensile strength | 45–55 MPa (common range; related to structure orientation/density/finishing) |
| Density | About 1.02 g/cm³ |
| Typical advantages | Stronger batch consistency and better dimensional stability, suitable for delivery of repetitive parts and low- to medium-volume production of functional parts |
| Structure tag | Structural validation/lightweighting |
| Assembly enhancements | support Threaded inserts; Please indicate the thread specification (such as M2/M3/M4), quantity and location; please note if you need to enlarge/ream/tapping |
| Finishing | Sandblasting, threaded inserts, and painting |
| Typical lead time | Related to size, quantity, typesetting and finishing; clear delivery and expedited options will be given after uploading the file |
Finishing
Spray painting (appearance and protection)
Used to improve color consistency and surface protection; it is recommended to note the target texture (matte/semi-matte/high-gloss) and reference image.
Threaded inserts (reliable assembly)
Used for screw assembly and repeated disassembly; suitable for functional parts such as jigs, brackets, and positioning parts that require higher assembly reliability.
Why Choose HP MJF Nylon PA12-Dyed Black
Better batch consistency
Suitable for parallel production of multiple pieces and delivery of duplicate parts; more friendly to low- to medium-volume production of functional parts, with less rework and fluctuations.
Dimensional stability (more suitable for assembly parts)
It is more "stable" when used to assemble positioning parts, structural validation parts, and fixtures; it is recommended to mark tolerances on key dimensions and note "key dimensions first".
Black is more resistant to dirt and more suitable for on-site use
It is used for equipment peripheral parts, tooling fixtures, and exposed functional parts to be delivered more attractively; if a more uniform appearance is required, sandblasting or painting can be selected.
Assembly friendly (inserts can be added)
support Threaded inserts Improves the reliability of screw connections and is suitable for structural parts that need to be fixed/repeatedly disassembled.
Recommended Applications
- Small and medium batch functional parts: Multiple parts are produced in parallel, duplicate parts are delivered, and parts that are sensitive to consistency
- Assembly positioning/jigs and fixtures: Need more stable dimensional performance and available strength
- Black stain resistance requirements: On-site use parts, exposed functional parts, equipment peripheral structural parts
- Lightweight structure: Striking a balance between strength and weight (further weight reduction possible through structural optimization)
It is not recommended to use it directly (it is recommended to change materials/processes)
- Ultimate mirror appearance: More suitable for SLA appearance resin or spray coating system (nylon powder parts require finishing to be more "refined")
- Ultra-high precision fit: Recommend CNC/secondary processing solution, or reserve machining allowance on key surfaces
- Higher rigidity/more dimensional stability: It is recommended to evaluate glass fiber reinforced nylon (MJF GF)
- Sealed/enclosed cavity structure and unable to discharge powder: It is recommended to change the structure or process (requires powder discharge design)
Design and DFM Guidelines
- Powder discharge hole (key to powder process): Closed cavities/internal channels require reserved powder removal holes; it is recommended to mark the location and minimum diameter requirement in the drawing or notes.
- Wall thickness and reinforcement: After the minimum wall thickness is met, it is recommended that the stress-bearing structure be thickened or reinforced; thin-walled large planes can reduce deformation and vibration through ribs.
- Assembly holes and fits: It is recommended to leave a margin for assembly holes; for strict fit, please mark the tolerance and note "requiring secondary reaming/reaming/tapping/inserts".
- Sharp corners and stress concentrations: It is recommended to add rounded transitions at the corners of the structure to improve crack resistance and fatigue resistance and make the assembly more reliable.
- Appearance standards: If you need a uniform matte texture, we recommend sandblasting; if you have higher requirements for color difference/texture consistency, we recommend painting and provide a reference picture.
Comparison with common nylon/resin materials
| Material | Key Advantages | Mainly applicable | Not suitable |
|---|---|---|---|
| White Nylon (SLS) | The functional type is more stable, does not require support, and is suitable for complex structures and low- to medium-volume typesetting. | Structural validation, assembly parts, wear-resistant moving parts, small batch functional parts | Ultimate mirror appearance, ultra-high precision fit (requires secondary processing/process change) |
| Black Nylon (SLS) | Functional + black stain-resistant; suitable for functional parts with color requirements | Assembly parts, structural parts, wear-resistant parts, batch functional parts | The ultimate mirror appearance and high-precision combination |
| HP Nylon - Gray (MJF) | Better batch consistency and dimensional stability, suitable for repeated delivery | Small and medium batch functional parts, assembly positioning parts, repetitive parts | Ultimate mirror appearance (still needs spray coating/finishing) |
| HP Nylon & Fiberglass - Gray (MJF GF) | Stronger rigidity and dimensional stability, suitable for load-bearing structural parts/positioning parts | Load-bearing structural parts, assembly positioning parts, functional parts with priority on dimensional stability | Fasteners that require a certain degree of elasticity/toughness (needs evaluation) |
| Tough SLA - Yellow-Green (SLA) | A more refined appearance with greater detail; and more impact resistant than standard resins | Appearance + prototype with certain toughness, buckle verification, light load function verification | Complex structure mass layout, wear-resistant for long-term use (better with nylon) |