The Technology of Multi Jet Fusion 3D Printing
Multi jet fusion 3d printing technology fuses layer after layer of powder using fusing and detailing agents with the aid of heat. This technology is particularly known for higher accuracy, isotropic nature and shorter building times than any other powder-based systems such as SLS.
The design choices that are being made influence the quality of the parts that are produced. This ranges from the thickness of the walls to the texture of the surfaces, every single design element can have its repercussions.
Consideration of Wall Thickness and Geometry
It is advisable to have wall thickness of at least 0.6 mm for mechanical components. MJF 3D printing however. Whereas for thinner sections, the wall may crack or deform during its cooling.
Uniform Geometry
Avoid abrupt cross-sectional changes of the wall thickness
Uniform geometry is necessary to minimize internal stresses
Curve instead of make sharp bends
Harness the strength and Precision of Orientation
The placement of the parts in the MJF 3d printing service affects both the strength and the pleasantness of the output.
Suggesting ways to help orient parts:
Try as much as possible to place flat surfaces on the uppermost part of the print to prevent it from warping
Vertical build helps in improving mechanical strength
Dissolvable holes should be provided in evacuated parts
Avoid Design with The Aim of Eliminating Excess Powder
Since the material used in MJF 3D printing is a powder and serves as both the building material and the support,
this is helpful in proper removal of the powder:
This can be done by incorporating holes of up to 2 mm in hollow objects
Enclosure of the whole structure should be avoided
Considering the position where internal pipes will be when placing them
Minimalize the Warping and Curling
Due to the temperature gradients inherent to 3D printing, warping can occur.
In order to achieve this:
Sharp angles should be replaced by curves
Stiffen any flat surface by adding ribs or gussets to it
Where applicable, design for symmetry
Considerations for Finishing in Post Production
Parts created by multi jet fusion can be processed with dying, finishing or even polishing. Consider this in your design:
Consider coating over allowances made
Except for parts where aesthetic finish does not matter, smooth the surface in the CAD model
At least 0.3 mm deep engravings to include logos or any other.
Work with the Right MJF 3D Printing Service
If you need MJF 3D printing services, choose a provider that offers consultation, design review, and quality assurance. A knowledgeable partner can guide you on design changes, material selection, and cost-effective strategies.
Conclusion: Design smarter to print smarter
Maximizing the potential of your MJF 3D printing efforts is largely dependent on the types of designs that are implemented. Thus, the choice of wall thickness, improvement of orientation of parts and planning of the way for handling charge all influence the end result. The performance and aesthetic characteristics of your project will be well-taken care of if the MJF 3d printing service you partner with is experienced enough.
