The above link will redirect you to the HP website where current information is available for design and material specifications.

If you have a specific question regarding part production or design please do not hesitate to get in touch.

After the obvious design considerations for using MJF 3D Printing for Production there are further subtleties that can enhance printed parts beyond the simple, can it be made design.

This is where we work with customers to achieve the very best that HP MJF can achieve.

• Layering: MJF printers generally use 80um layers. Any surface printed at less than 30° to the horizontal will display the layering. (Note: some MJF Printers have reverted to 90um layers to increase throughput).
• Thermal Abrasion: any horizontal surface facing upwards is likely to show some thermal abrasion. This is manifested as a rough surface (which nobody wants).
• Capillarity: When a part is printed each layer is molten liquid Nylon (Pa12) if you pour fresh powder over a liquid then the result is capillary action sucking the molten liquid up into the fresh powder. This is most obvious where designs are printed flat and you will see puckered edges.
• Packing density is also quite critical to the outcome (and cost). As a part specifier this is not really within your control but it can be. Choose a bureau, like Incremental-AM that optimises build nesting for quality rather than for yield.
• Slice Density: MJF is not capable of changing the amount of energy used very quickly. So if the next layer hits a big flat surface and the slice density goes through the roof the energy supplied by the printer will be less than optimal. A well nested build will ideally have a lead in from lower density at the base up to the build density and then this should stay broadly consistent all the way through the build. Gradual changes can be accommodated by the printer.

The question changes from "Can I MJF print a part?" to "How do I best Print a part using MJF?"

Given the above information and translating it into the best possible printed MJF parts is where we at Incremental-AM come in.