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3D Printing Certification

3D printing in Polyamide (MJF) | 3D Printing Website


How 3D Printing certification in Polyamide (MJF) Truly Functions

After the launch of TPU on Multi Jet Fusion very last 7 days, we considered we would seem back again this 7 days at a further material employing the same 3D printing certification technological innovation: Polyamide (MJF).

In this web site, we get a look at how 3D printing certification in Polyamide (MJF) works, as well as digging into the discrepancies involving our 3D printing certification polyamides.


Bottle Opener by i.materialise, 3D printed in Polyamide (MJF), Dyed Complete

HP Multi Jet Fusion: The Technology

Very similar to Laser Sintering, HP Multi Jet Fusion is a powder-dependent technologies. But as opposed to SLS, it does not use lasers. The powder mattress of the machine is heated uniformly but as a substitute of a laser, a fusing agent is jetted where by particles need to have to be selectively fused.

Just after this process, a detailing agent is also jetted to enhance the resolution of the print. Even though infrared lights go around the surface of the powder mattress, the jetted product captures the heat and distributes it evenly. Watch this online video to see MJF know-how in action.

HP Multi Jet Fusion | 3D Printing Technologies

HP Multi Jet Fusion | 3D Printing Technologies

Polyamide (MJF): The Materials

Polyamide (MJF) is a incredibly fine, white granular powder. Its all-natural end has a sandy glimpse and a grey shade. The ultimate color is gray for the reason that the white polyamide powder is blended with the black ink used as a fusing agent. Which is why the closing gray can have a bit unique shadings relying on the print. For a uniform appear, it is attainable to dye the printed styles in black.

You ought to use Polyamide (MJF) for models which call for crisp textures, surface area details or labels. It’s also a good material for remarkably advanced components with lattices and hinges.

The Design: How to Get the Excellent Polyamide (MJF) 3D Print

The recommended wall thickness for Polyamide (MJF) is at minimum 1mm. If the parts are massive, they may well have to have thicker partitions or perhaps added fillets or ribs for reinforcement. Study the design guides on our web page to study what to do if you have a structure with hinges.

It is advisable to hollow sound versions as significantly as attainable. This will prevent sink marks and will help save substance. For hollowed types, the wall thickness really should be 2-3mm and the products ought to have at minimum two holes with a 2mm diameter to remove extra powder.

It is feasible to print interlocking sections with Polyamide (MJF) if they have a minimum amount clearance of .5 mm.

  • Engraved textual content and surface area facts:

Polyamide (MJF) is a great content for specific surfaces. Embossed or engraved textures need to be at minimum .25mm thick or .55mm for letters. Read through a lot more on that in the design and style guides.


Mobius Loop Bracelet by Dylan Burns

“Warping” is what happens when huge, flat plains (like an A4) deform all through the approach of 3D printing certification thanks to the cooling down treatment. We propose steering clear of these sorts of surfaces in your prints for optimum outcomes.

The optimum measurement for prints in Multi Jet Fusion is 256x340x360mm, but you can print as quite a few elements or subparts for a remaining style and design as you want.

What is the Variance amongst Polyamide (MJF) and Polyamide (SLS)

Equally polyamides are really a great deal alike, and the technologies applied to 3D print them can accomplish somewhat distinct results. Both equally Polyamide (SLS) and Polyamide (MJF) can be applied for related purposes, but MJF has a couple of rewards in comparison to SLS.

To start with, Polyamide (MJF) prints have much less porosity and greater isotropy. Polyamide (MJF) is also the ideal selection for finishes with a far more specific area resolution, and it also allows types with thinner walls.


Lens Cap Holder in Polyamide (MJF)


Lens Cap Holder (58mm) by Spruce, 3D printed in Polyamide (MJF), Dyed Finish

Quicker guide periods for Polyamide (MJF)

In addition, 3D printing certification with Multi Jet Fusion can be more rapidly than carrying out it with laser sintering technological innovation. 1 of the factors for this is that each layer normally takes the very same quantity of time for printing with out regard to the contours or dimension of the establish, so timing can be much more predictable. The logic driving this is that in MJF engineering the overall print mattress will get fused at once for each layer. On the contrary, SLS works by using a laser scan that contours the product.

The other reason for speedier manufacturing instances is that MJF involves considerably less great-down time than SLS: just 10 hrs, as an alternative of SLS’s 24 several hours..

In short, MJF will be the know-how to go for if you need shorter lead occasions but polyamide (SLS) is the bets solution for colourful finishes, as MJF is often gray or black.

You can discover far more specific facts on Polyamide (MJF) on the design and style recommendations or specialized requirements of our site. To consider out this new technologies you can upload your documents to our system and you will get an quick quote for your print, as very well as an estimated transport time. If you want to get a really feel for the content, we would suggest purchasing some samples of Polyamide MJF.

Have you attempted this new engineering for your 3D prints? What did you like the most about the benefits?

Highlighted image: Gorilla face in Polyamide (MJF) from a clay sculpture