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With over 35 years of experience, the TriMech Group offers a comprehensive range of design, engineering, staffing and manufacturing solutions backed by experience and expertise that is unrivalled in the industry. The TriMech Group's solutions are delivered by the divisions and brands shown here, use the links above to visit the group's websites and learn more.


High Concept Modeling Material

DraftGrey is a rigid material used exclusively with the Super High Speed print mode for concept modeling.

Models will have a medium opacity and smooth finish. Printing at 2x the speed of High Speed mode with a 57 microns layer thickness, DraftGrey is the cheapest and fastest way to model on Stratasys PolyJet 3D printers.

Draftgrey example part

DraftGrey Material Profile

Learn more about the benefits PolyJet 3D printed parts

TriMech can bring your boldest ideas to life with the J850 3D printer from Stratasys.

With the Super High-Speed Draft Mode and the full spectrum of full-color Pantone color validation, we can help you to create better designs, faster iterations, and more models all in one print!

Draftgrey 3d printing material

Main Uses

With DraftGrey we can print concept models twice as fast as High Speed Mode. Models made with DraftGrey have a medium opacity and a smooth finish.


DraftGrey Material Applications

Concept designs



DraftGrey Material Specification

Properties and testing results for the 3D printing material

Mechanical PropertyASTMValue
Tensile StrengthD-638-0350 – 65 MPa (7,250 – 9,450 psi)
Elongation at BreakD-638-0510 – 25%
Modulus of ElasticityD-638-042,000 – 3,000 MPa (290,000 – 435,000 psi)
Flexural StrengthD-790-0375 – 110 MPa (11,000 – 16,000 psi)
Flexural ModulusD-790-042,200 – 3,200 MPa (320,000 – 465,000 psi)
HDT, °C @ 0.45 MpaD-648-0645 – 50 °C (113 – 122 °F)
HDT, °C @ 1.82 MpaD-648-0745 – 50 °C (113 – 122 °F)
Izod Notched ImpactD-256-0620 – 30 J/m (0.375 – 0.562 ft-lb/inch)
Water AbsorptionD-570-9824hr 1.1 – 1.5%
TgD-7028 (DMA)52 – 54 °C (126 – 129 °F)
Shore HardnessScale D83 – 86 (Scale D)
Rockwell HardnessScale M 73 – 76 (Scale M)
Polymerized DensityScale D-7921.17 – 1.18 g/cm3
Ash ContentUSP2810.23 – 0.26%
OtherTest MethodValue
Black / TranslucentWhite
Shore HardnessASTM D-224030 – 35 Scale A30 – 40 Scale A
Polymerized DensityASTM D-7921.14 – 1.15 g/cm31.14 – 1.15 g/cm3

Advantages of PolyJet Technology

Advantages of parts built with a Stratasys PolyJet Machine

Realistic Parts

Stratasys PolyJet 3D Printers are based on proven technology, which creates precise prototypes that set  the standard for finished-product realism.

Their fine resolution makes complex shapes, intricate details  and smooth surfaces possible.

Precise Models

PolyJet 3D Printing works by jetting layers of liquid photopolymer onto a build tray and instantly curing them with UV light.

The fine layers build up to create a precise 3D model or prototype. Models are ready to handle right out of the 3D printer, with no post-curing needed.

Better ideas, easier sell

PolyJet 3D printed models improve communication and collaboration because they produce amazingly  accurate representations of your ideas that you can share with your team and your clients for a faster, more confident buy-in.

Industries we work with

TriMech services are used in a wide variety of industries

Architecture 3D Printing

Architecture & Construction

  • Model making
  • Urban planning
  • Concepts
Consumer Product 3D printing

High Tech & Consumer Products

  • Aesthetic and function testing
  • Concepts and prototypes
  • Sales and marketing models
Industrial design 3D printing

Industrial Design & Manufacturing

  • Aerospace
  • Automotive
  • Defense
  • Industrial equipment
  • Marine and offshore
  • Oil and gas
Medical 3D printing

Dental, Medical & Life Sciences

  • Anatomical models
  • Medical devices
  • Orthopedics
  • Prosthetics
  • Surgical planning models
Mold tool die 3D printing

Industrial Products, Mold Tool & Die

  • Jigs, fixtures, and assembly tooling
  • Injection molding
  • Silicone molding
  • Sand and investment casting
  • Thermoforming

Interested in DraftGrey?

Call 888.392.0957 or Upload Your Part