SJP 3D Printing Technology Overview

Single Jet Passing (SJP) is a metal additive process by Desktop Metal created for their Production System by the inventors of the binder jetting and the single pass inkjet processes. SJP works by building metal parts by adding a layer of powder metal and prfecisely jetting the binder used to achieve the form of the desired part. Two full-width print bars containing over 32,000 jets work in conjunction with powder spreaders to spread powder and print in a single quick pass across the build area, jetting millions of droplets per second.

Print with metal in a matter of minutes instead of hours, achieving rates of up to 500 cubic inches per hour.



Metal 3D Printing Gear


Multiple materials in a single print

High resolution down to 16-microns

Full-colour with overlays and textures

Over-mold without tooling


Secure, web-based software constructs build plans from your STL or CAD files to automatically generate support and control parameters based on part geometry and material


Layer by layer, a green part is shaped by extruding bound metal rods (metal powder held together by wax and polymer binders) through Bound Metal Deposition


The green part is immersed in proprietary debind fluid, dissolving primary binder and creating an open-pore channel structure throughout the part in preparation for sintering


As the part is heated to temperatures near melting, remaining binder is removed and metal particles fuse together causing the part to densify up to 96-99.8%


Single Pass Jetting from Dekstop Metal is an innovative new approach to metal 3D printing.

  • 20x lower cost with competitive cost-per-part as no tooling is required and SPJ can outperform traditional manufacturing processes
  • Build speeds of up to 8200 cm3/hr- 100x faster than laser-based systems & at a resolution of <50um voxels
  • Unlike laser sintering, powder is not welded to the base plate
  • Remove supports by hand
  • Take advantage of a wide range of alloys through the use of MIM metal powders of existing materials


  • 17-4PH
  • 316 L
  • Incone1 625
  • ASIS 4140
  • Copper
  • H13

SPJ Technical Specifications

Maximum Accuracy
Maximum Accuracy
0.1-0.3 mm
Layer Resolution
Layer Resolution
16 microns, or 0.016mm/0.0006"
X/Y resolution of 0.0017
Minimum Wall Thickness
Minimum Wall Thickness
Maximum Part Dimensions (Single Build)
Maximum Part Dimensions (Single Build)
490 x 390 x 200 mm (19.3 x 15.35 x 7.9 in.)
Shore Hardness Ranges
Shore Hardness Ranges
27A - 95A
matte or glossy, additional finishes available as a service

Desktop Metal Production System

The Production System from Desktop Metal is the first metal 3D printer for mass production. Experience the most advanced engineering innovation made to delivery speed, quality, and cost-per-part needed to compete with traditional manufacturing processes.