Published On: August 9, 2021

How does the HP 580 MJF printer work?

For anyone who’s had even a passing interest in 3D printing, the first question is often: how does it work? As we’re big fans of our HP MJF printer, we’re more than happy to answer that question, at least in part.

HP’s MJF (Multi Jet Fusion) printing process, while featuring the usual design in, object out procedure standard across all 3D printers on the market, has a few differentiating traits, the key among which are the material it uses and how it prints. MJF printers use HP’s line of PA 12, a finely granulated polyamide (aka nylon) powder.

In the printer, the powder is set layer by layer, each one a mere micron thick. As each layer is laid, powder particles are fused using a mix of specialised fusion agents and heat. If the design file featured colour, this is also the point where coloured inks are added.

Then, the setting begins. MJF printers have three cooling settings:

  1. Auto, where the printer automatically sets a cooling time based on the amount printed
  2. Quick, where parts can’t be left to sit for a long time
  3. Manual, where we input our preferred setting time

While it depends on the setting and the order size, cooling still takes a few hours, with 24 being the optimum.

The printer will then vibrate to release any free powder and reclaim it for reuse. And once all that’s done, your order is taken out.

Ready to test it for yourself? Submit your design or contact us today.