Binder Jetting 3D Printing

3D Printing Service

Binder Jetting Service is a Cost-Effective Option for Full-Color Models and Functional Metal Parts

Binder Jetting Process Overview

Binder Jetting is a 3D printing process that involves building the layers of a part by selectively applying an adhesive to a powder bed. The powder bed then descends one layer in height, followed by a roll of fresh powder evenly spread on a new layer over the part. After the shape of the part is printed, the part (now in the green state) will typically undergo some sort of post-processing to make it stronger, commonly baked in a kiln. The metal, gypsum, or ceramic powder binds to itself to form a superior integral bond.

Certain printers—color jet printers—can apply the colored adhesive. This provides the opportunity to print in full color, suiting visual models and colorful, nonfunctional parts with complex geometries.

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Binder Jetting Process at a Glance

Branded Processes Also Known As
Color Jet Printing (CJP)
Binder Jetting (BJ)
Full Sinter Binder Jetting (FSBJ)
Binder Jetting with Metal Infiltration (BJMI)
  • Standard Tolerance
    +/- 3%
  • Stock Surface Finish
    ~400 µin Ra
  • Lead Time
    3-10 Business Days
  • Maximum Size
    24×24×24
  • Minimum Layer Thickness
    0.004" (0.100mm)
  • Minimum Feature Size
    0.02" (0.50mm)
  • Minimum Wall Thickness
    0.04" (1mm)
Advantages
Full-Color Prints.CJP jetting machines can print in the full-color spectrum.
Relatively Affordable. A cost-effective technology for gypsum or metal prints.
Material Conservation. Powder can be reused for later prints.
Limitations
Multiple Steps. Jetting and post-processing can extend the time needed to create the design.
Simple Geometry. A challenging post-process makes small features and complex designs more difficult to achieve than with other powder bed processes.
Low Durability in Green State. Without a post-processing step, parts are highly anisotropic and typically fragile in the Z direction. Solutions include dipping it in acrylate for gypsum parts or fully sintering for metal parts. 
Example Machines
3D Systems ProJet CJP 660Pro
ExOne M-Flex
ExOne S Max
ZCorp ZPrinter 650
Example Materials
Visijet PXL
Full-Color Sandstone
Sand
Stainless Steel 316 matrix infiltrated with bronze
Stainless Steel 420 matrix infiltrated with bronze

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