Flexible is excellent for simulating soft-touch materials and adding ergonomic features to multi-material assemblies.

Flexible resin has elastomeric properties allowing you to print parts on the Form 1+ and Form 2 3D printers that are bendable and compressible. Parts are pliable when thin and resilient when thick. Flexible has compression characteristics that make it great for creating parts like custom grips, stamps, keypads, gaskets and wearable prototypes. It does not shatter upon failure making it ideal for high impact applications.

Recommended for

  • Cushioning and dampening
  • Functional prototypes
  • Ergonomic prototyping: handles, grips
  • Simulating soft-touch materials
  • Adding soft overmolds to multi-material assemblies
  • Packaging
  • Stamps
Flexible 3D printing
PropertiesFlexible Resin
Tensile Strength - Yield3.3 MPa
Elongation at Break60 %
Shore Hardness75 A
Vicat Softening Temperature
231 °C


  • High ductility
  • Good elongation


  • Not suitable for simulating very high elongation materials (rubber band)
  • Not suitable for very fine features or thin walls
Design tips

Maximum bounding box

145 × 145 × 175 mm

Minimum bounding box

X, Y,Z > 5 mm ( for separated parts)

Minimum embossed detail

0.1 mm high & wide mm thick

Minimum engraved detail

0.1 mm high & wide

Minimum unsupported wall thickness

0.6 mm

A supported wall is connected on two or more sides. An unsupported wall is one connected to other walls on less than two sides. Walls in your model should be thicker than or equal to the minimum measurements suggested to ensure your model makes it through printing and cleaning. Walls that are too thin are prone to warping in the printing processing, or may break when we remove it from the printer and clean it. Walls and wires close to or slightly above the guidelines may still be rejected based on the geometry. For example, extra long wires or walls protruding from an object may be damaged during cleaning. Our production team will communicate with you if the design is too weak with tips on how to strengthen it.

Minimum supported wall thickness

0.3 mm

Minimum supported feature size

0.6 mm

Minimum unsupported feature size

1 mm

A geometry considered a wire when its thinner in both unconnected directions than its length. When a geometry is thicker than 0.9 mm in one direction, it will fall under the wall guidelines. Wires that are under our suggested minimums are prone to breaking in the cleaning process, or warping.

Escape hole diameter

Single Escape Hole Diameter
4.0 mm
Multiple Escape Hole Diameter
2.0 mm

Hollow parts of your product are filled in with a waxy support material, which is melted out before we ship your product. If escape holes are not large enough, this wax will remain inside the product.

A single escape hole at the end of a cavity will not allow material in the corners near the escape hole to fully escape. So we recommend multiple escape holes at both ends of the cavity.

Clearance between parts

0.05 mm

Clearance is the space between an two parts, e.g. space between gears or a ball and socket joint.