Carbon’s RPU 70 is a rigid polyurethane (PU) material with excellent mechanical properties, making it an ideal choice for producing functional parts. The material has high stiffness, good tensile strength, and impact resistance characteristics, which makes it suitable for applications that require parts with high durability and structural integrity. Carbon’s RPU 70 material has a Shore D hardness of 70 and offers good resistance to abrasion, chemical exposure, and wear and tear. It has a smooth surface finish, which means that parts created from this material can be used without additional finishing requirements. It produces complex geometries with internal and external features, making it an excellent option for creating high-end prototypes, short-run production, and end-use parts.
Digital Light Processing (DLP) is a type of 3D printing that employs a UV-sensitive liquid resin cured through a digital light projector. Once the printing process is finished, our AM technicians thoroughly clean the part, remove any supports, and apply UV and thermal curing, if necessary.
DLP 3D printing is an ideal choice for projects that require high levels of detail and finishing in various production-grade materials. This technology can produce components with varying durometers and characteristics, ranging from supple silicone to rigid high-temp cyanate ester. It is beneficial for creating small end-use components, lightweight metal part replacements, functional, high-detail prototypes, jigs, and fixtures.
Design Recommendations
Feature
Measurement
Connecting & Moving Parts
Rigid: 0.12 in
Flexible: 0.04 in
Escape Holes
Rigid: 0.04 in
Flexible: 0.04 in
Embossing & Engraving
0.02 in SIL 30 0.01 in all other material
Holes & Openings
0.002 in
Horizontal Spans
2x overhangs
Minimum Features
Rigid: 0.004 in
Flexible: 0.04 in
Pin Diameter
Rigid: 0.004 in
Flexible: 0.04 in
Supports & Overhangs
0.04 in EPU 40 &41 & SIL 30
0.08 in RPU 70 & 130, FPU 50, & EPX 82
0.12 in MPU 100 & UMA 90
Walls (Supported)
0.06 in RPU 130, EPX 82, & SIL 30
0.04 in all other materials
Walls (Unsupported)
0.1 in
Feature
Measurement
Connecting & Moving Parts
Rigid: 3 mm Flexible: 1 mm
Escape Holes
Rigid: 1 mm Flexible: 1 mm
Embossing & Engraving
0.5 mm SIL 30 0.3 mm all other materials
Holes & Openings
0.04 mm
Horizontal Spans
2x Overhangs
Minimum Features
Rigid: 0.1 mm Flexible: 1 mm
Pin Diameter
Rigid: 0.1 mm Flexible: 1 mm
Supports & Overhangs
1.0 mm EPU 40 & 41 & SIL 30
2.0 mm RPU 70 & 130, FPU 50, EPX 82
3.0 mm MPU 100 & UMA 90
Walls (Supported)
1.5 mm RPU130, EPX 82, & Sil 30
1 mm all other materials