Ponoko

3D Printed - Rainbow Plaster

 

Material description

Rainbow plaster objects can be printed in full multi color or in a grey monotone. The material is a proprietary high performance composite.

This machine prints objects in full color. 3D models with color must be VRML files and there are certain procedures to follow in order to assign color correctly. It is recommended that you use either Blender or Solidworks to create your color VRML file. See the Blender Starter Kit and the Solidworks Starter Kit to find out how to save your files.

Orders using this material generally ship in 1-2 weeks. Find out more.

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Technology description

Rainbow plaster objects are made on a ZCorp 3D printing machine. These machines create each layer by using an inkjet head to deposit binder onto a bed of compacted powder. Powder is layered and cured in succession until a part is formed. After each build, the loose powder is removed leaving only the object remaining. The fresh object is then coated in elastomer which gives it added rigidity.

Design tips

The minimum recommended wall thickness for Rainbow plaster is 2mm and minimum detail size is 0.5mm. However, objects need enough strength to be self-supporting. For example, large, bulky geometries connected with thin structures (like a character with a big head on a skinny neck) could break in handling (especially in shipping) and should be designed to avoid this. If you have features that extend and converge to a point (eg a cone) they should be at an angle greater than 10 degrees.

Rainbow plaster has a sandstone-like appearance and consistency and is somewhat fragile.

Appendages for characters should also be designed with care, with sufficient structure in order to avoid them breaking off in handling.

Nested objects (objects floating within another object), hinged objects, and interlinking objects like chains work well using this material. A gap of 0.9mm between objects should be used for them to separate correctly after printing.

Hollow geometry requires a hole to clean out the unbound powder from the inside.

Tips from other designers

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cromage says:

Can this material be sanded/polished? What polish works the best?

Added 7 months ago. ( delete )
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madebydan says:

If printing in color is is not recommended to sand this material.

Added 7 months ago. ( delete )
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WEs442hQ says:

Is this material food safe?

Added 4 months ago. ( delete )
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madebydan says:

Unfortunately, it is not. The only food safe 3D printed material we have is the ceramic.

Added 4 months ago. ( delete )

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