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Hawk Ridge Systems and Markforged

Hawk Ridge Systems is thrilled to partner with Markforged. They have been designing and manufacturing new technologies and materials for 3D printing for several years. Hawk Ridge is excited to help bring these break-through solutions to market. When we first saw their 3D printers at SOLIDWORKS World in 2014, we realized it was only a matter of time before we brought this cost-effective technology to our customers. With the founder’s strong background in SOLIDWORKS, we knew that they were designing products with our customers in mind.

Same Day. Strong Parts.

Designed to strong, high quality, uncompromised parts, Markforged 3D Printers™ are the world’s first 3D printers capable of printing continuous carbon fiber, Kevlar®, and fiberglass. Using a patent pending Continuous Filament Fabrication (CFF™) print head alongside a Fused Filament Fabrication (FFF) print head, Markforged printers can create functional parts by combining our specially tuned nylon with continuous fiber filaments.

3D Print Parts:

  • With a higher strength-to-weight ratio than 6061-T6 Aluminum
  • Up to 27x stiffer than ABS
  • Up to 24x stronger than ABS

 

Property Test Standard Carbon CFF Kevlar CFF Fiberglass CFF HSHT Glass CFF
Tensile Strength (MPa) ASTM D3039 700 610 590 600
Tensile Modulus (GPa) ASTM D3039 54 27 21 21
Tensile Strain at Break (%) ASTM D3039 1.5 2.7 3.8 3.9
Flexural Strength (MPa) ASTM D790* 470 190 210 420
Flexural Modulus (GPa) ASTM D790* 51 26 22 21
Flexural Strain at Break (%) ASTM D790* 1.2 2.1 1.1 2.2
Compressive Strength (MPa) ASTM 6641 320 97 140 192
Compressive Modulus (GPa) ASTM 6641 54 28 21 21
Comprehensive Strain at Break (%) ASTM 6641 0.7 1.5 n/a n/a
Heat Deflection Temperature (ºC) ASTM D648 Method B 105 105 105 150
Izod Impact – notched (J/m) ASTM D256-10 Method A 958 1873** 2603 3117

*Measured by a method similar to ASTM D790
**Two samples measured instead of 5

 

Mechanical Properties of Nylon

Property Test Standard Tough Nylon Onyx
Tensile Modulus (GPa) ASTM D638 0.94 1.4
Tensile Stresses at Yield (MPa) ASTM D638 31 36
Tensile Strain at Yield (%) ASTM D638 27 25
Tensile Stress at Break (MPa) ASTM D638 54 30
Tensile Strength at Break (%) ASTM D638 260 58
Flexural Strength (MPa) ASTM D790* 32 81
Flexural Modulus (GPa) ASTM D790* 0.84 2.9
Flexural Strength at Break (%) ASTM D790* n/a n/a
Heat Deflection Temperature (ºC) ASTM D648 Method B 49/140† 145
Izod Impact – notched (J/m) ASTM D256-10 Method A* 1015 334

*Measured by a method similar to ASTM D790
†Heat deflection temperature of a beam with less than 10% HSHT Glass added, see below for details

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Design Principles for Bending

Markforged CFF™ technology reinforces 3D plastic parts with 10x stronger and 20x stiffer continuous fibers.

The above Material Properties therefore are combined in a part automatically by our Eiger software (although users may also customized the fiber distribution per layer).

In automatic mode, Markforged’s Eiger software defaults to creating embedded Sandwich Panels — well-known reinforced structures widely used in aerospace and construction that provide excellent bending performance.

Overall part stiffness and strength, represented by tensile and compressive Material Properties above, depends very much upon fiber content, and is strongly related to the amount of fiber the user chooses for a part.

However, per engineering sandwich theory, flexural or bending performance tends to benefit strongly from modest reinforcement in a sandwich panel form.

Don’t forget to register for our FREE 3D Printing Open House at Gentle Giant Studios in Southern California. Mark your calendar for March 17th!

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