---
title: "MJF 3D Printing Service | HP Multi Jet Fusion Nylon | OpenSpindle"
description: "Get quotes for MJF (Multi Jet Fusion) 3D printed nylon parts from independent shops. Strong, consistent PA12 and PA11 production parts with fine detail and fast batches."
canonical: https://openspindle.com/capabilities/mjf-3d-printing
---

# MJF 3D printing from independent shops

Multi Jet Fusion fuses nylon powder with a printed binding agent and heat, building strong, consistent, near-isotropic parts with no support structures. It resolves finer detail than SLS and runs dense, fast batches, which makes it a workhorse for low-volume production. Common materials are PA12, PA11, glass-filled nylon, and TPU. Upload a model and hear back from MJF shops.

## MJF and SLS shops on OpenSpindle

Real shops running nylon powder-bed printers. See their equipment and get a competitive quote for your project.

[Browse all 3D printing shops](https://openspindle.com/manufacturers?capability=3D%20printing)

## How to design for MJF 3D Printing

MJF parts are supported by the surrounding powder bed, so complex geometry comes out clean with no support marks. It holds slightly finer features than SLS.

| Design rule | Typical spec | Why |
| --- | --- | --- |
| Typical tolerance | +/- 0.3% (min +/- 0.3 mm) | Consistent part to part across a build. |
| Min wall thickness | 0.5 to 0.8 mm | Thinner walls can warp or fuse incompletely. |
| Min feature size | 0.4 mm | Slightly finer than SLS thanks to the printed agent. |
| Support material | none needed | The powder bed supports the part, so there are no supports to remove. |
| Clearance for moving parts | 0.4 to 0.5 mm | Tighter gaps fuse mating parts together. |
| Escape holes (hollow parts) | >= 4 mm, two holes | Let trapped powder drain out of enclosed volumes. |

Typical values from powder datasheets; a shop confirms against its machine and material.

## MJF vs other 3D printing processes

When another process fits better than Multi Jet Fusion nylon.

| Process | Best for | Typical volume | Choose it over MJF 3D Printing when |
| --- | --- | --- | --- |
| [SLS](https://openspindle.com/capabilities/sls-3d-printing.md) | Similar strong nylon parts | Low-volume production | Your shop runs SLS, or you want a specific SLS material; the two are close substitutes. |
| [FDM / FFF](https://openspindle.com/capabilities/fdm-3d-printing.md) | Cheap prototypes, large parts | Prototype to low volume | You want the lowest cost or a large part and can accept layer lines. |
| [Resin / SLA](https://openspindle.com/capabilities/resin-3d-printing.md) | Fine detail, smooth cosmetic finish | Prototype | You need the crispest detail or a smooth cosmetic surface over nylon toughness. |
| [Injection Molding](https://openspindle.com/capabilities/injection-molding.md) | High-volume identical plastic parts | 1,000+ | You are past a few hundred parts and can amortize a mold for lower per-part cost. |

## Industries Served

- Robotics & automation
- Consumer products
- Medical devices
- Automotive
- Industrial / OEM
- Drones & UAV

MJF nylon is common wherever teams need durable, consistent production parts without tooling.

## Frequently Asked Questions

### What is MJF 3D printing?

MJF (Multi Jet Fusion), an HP powder-bed process, jets a binding agent onto nylon powder and fuses it with heat, layer by layer. The unfused powder supports the part, so it needs no supports and prints strong, near-isotropic parts with consistent mechanical properties.

### MJF vs SLS: what is the difference?

Both fuse nylon powder with no supports and give strong, near-isotropic parts. MJF uses a printed agent plus heat instead of a laser, which tends to give finer detail, more consistent part-to-part properties, and faster full-bed throughput. SLS offers a slightly wider material range on some machines. For most nylon parts they are close substitutes.

### What materials does MJF use?

The most common is PA12 (nylon 12), plus PA11 for more ductility and impact resistance, glass-filled nylon (PA12-GF) for stiffness and heat resistance, and TPU for flexible parts. MJF PA12 parts come off the machine grey and are usually dyed black for a uniform finish.

### What tolerance can MJF hold?

Typical MJF tolerance is about +/- 0.3% of the dimension, with a minimum near +/- 0.3 mm, and it is very consistent from part to part. Call out critical features so the shop can confirm feasibility and orientation.

### Does MJF need support structures?

No. Like SLS, the surrounding powder bed supports the part during the build, so there are no supports to remove and no support marks. That lets MJF print lattices, enclosed features, and interlocking assemblies, and nest parts densely for efficient batches.

## Other Capabilities

- [SLS 3D Printing](https://openspindle.com/capabilities/sls-3d-printing.md)
- [FDM / FFF 3D Printing](https://openspindle.com/capabilities/fdm-3d-printing.md)
- [3D Printing (overview)](https://openspindle.com/capabilities/3d-printing.md)
- [Injection Molding](https://openspindle.com/capabilities/injection-molding.md)

## Get MJF 3D printing quotes

Upload a model and compare quotes from independent MJF and SLS shops.