3D Printing Service:
Digital Light Processing

Parts in 1 to 4 days.

Digital Light Processing (DLP) is used for:

Quality Matters  |  AS9100D Certified, ISO 9001:2015, ISO 13485:2016, & ITAR Registered

Certifications and Registrations

*Not all locations have all certifications and registrations. Parts requiring these will be made at facilities with the correct credentials.

AM Photopolymer Based Technology | Digital Light Processing (DLP)
Our Digital Manufacturing Process is Simple.

Upload a CAD file and request a quote.

Our team begins production once the project specifications are finalized and the quote is accepted.

When the part has been completed and finished, it passes through quality control.

After your part goes through quality control, our team ships the part(s) to you.

Table of Contents

What is Digital Light Processing?

Digital Light Processing (DLP) is a form of 3D printing that utilizes a UV-sensitive liquid resin cured through a digital light projector. Once the printing process is completed, our AM technicians clean the part, remove any supports, and subject it to UV and thermal curing if needed.

DLP 3D printing is particularly suitable for projects requiring high levels of detail and finishing in various production-grade materials. Additionally, this technology can produce components with various durometers and characteristics, from supple silicone to rigid high-temp cyanate ester. Overall, it is an excellent choice for small end-use components, lightweight metal part replacements, functional, high-detail prototypes, and jigs and fixtures.

How does Digital Light Processing work?

To begin, an AM Technician uploads your CAD file into the machine, where the software breaks it down layer by layer. Additionally, we carefully consider the build’s direction and the placement of supports. The Digital Light Processing (DLP) machine uses a photochemical process by projecting light into a UV-curable resin. Subsequently, the build platform rises after the light solidifies each layer, and these steps repeat until the build is complete.

Following the DLP printing, an AM technician manually removes the component from the platform and support structure. Subsequently, the part is cured to its final mechanical properties by utilizing a post-curing apparatus (PCA) or a forced-circulation oven before finishing the final surface.

AM Technology | Digital Light Processing (DLP)

Advantages to Digital Light Processing

Digital Light Processing technology has revolutionized the way products are designed and manufactured. The following are a few of the advantages of digital light processing:

Disadvantages to Digital Light Processing

While there are a lot of advantages to digital light processing, there are also some disadvantages to consider:

 

Digital Light Processing at Prototek

OEM:

Carbon

Max Build Area:

7.4 x 4.6 x 12.8 in

Lead Time:

1 – 4 Days – Depending on materials.

Material:

EPU 40 & 41, EPX 82 & 86FR, FPU 50, LOCTITE® 3D IND405 Clear, MPU 100, RPU 70 & 130, SIL 30, UMA 90

Tolerances:

UMA 90: ± 0.005 in for the first inch and ± 0.002 in/in for each additional inch.

Two-part engineering materials depend on the geometries.

Layer Thickness:

Standard Resolution: 0.004 in

Fine Resolution: 0.002 in

Ultra Fine Resolution: 0.001 in

Prototek's Materials

Material

Description

Characteristics

More Information

Elastomeric Polyurethane

It is a high-performance elastomer with excellent elastic recovery, tear resistance, and high impact strength. Consequently, it is an ideal material for producing durable and flexible parts, such as gaskets and seals.

  • Black
  • Biocompatible*
  • Chemical Resistant
  • Elastomeric
  • Flexible
  • Impact Resistant
  • Tear and Wear Resistant

Elastomeric Polyurethane

This elastomeric polyurethane material offers superior flexibility, durability, resilience, tear resistance, and elongation properties. Moreover, it is an ideal choice when toughness and reliability are essential.

  • Black
  • Biocompatible*
  • Chemical Resistant
  • Elastomeric
  • Fatigue Resistant
  • Flexible
  • Impact Resistant
  • Wear and Tear Resistant

Epoxy

Not only can it produce parts with exceptional stiffness and strength, but it can also withstand high temperatures and harsh environments. Additionally, it can be easily post-processed to add features such as threaded inserts and other secondary operations.

  • Black 
  • Good for Snap Fits
  • High Strength
  • Impact Resistant
  • Rigid
  • Temperature Resistant

Flame Retardant Epoxy

The material is resistant to chemicals and has high thermal conductivity, enabling it to withstand harsh environments. Moreover, its flame-retardant properties make it suitable for use in parts that require compliance with flame retardancy standards, such as in the aerospace and automotive industries.

  • Black 
  • Chemical Resistant
  • Flame Retardant
  • Good for Snap Fits
  • High Strength
  • Impact Resistant
  • Rigid
  • Temperature Resistant

Flexible Polyurethane

This is highly durable DLP material with excellent resistance to abrasion and impact, making it ideal for producing parts and products requiring flexibility and strength. Additionally, it has a Shore A hardness of 50, which means it has moderate flexibility while maintaining its shape. Moreover, it can withstand high temperatures and chemical exposure.

  • Black 
  • Abrasion Resistant
  • Fatigue Resistant
  • Good for Snap Fits
  • High Strength
  • Impact Resistant
  • Wear and Tear Resistant

It is a clear, photoreactive resin used for 3D printing. This material allows for high-resolution printing with fast cure times. Moreover, its versatile formulation makes it suitable for a wide range of applications in industries such as medical, consumer goods, and automotive. Its high elongation and toughness make it resistant to cracking under stress.

  • Clear/Translucent
  • High Strength
  • Impact Resistant
  • Rigid

Medical Polyurethane

This high-performance thermoplastic material is specifically designed for the healthcare industry. It also possesses exceptional strength, durability, and chemical resistance, making it ideal for medical equipment and devices.

  • White
  • Abrasion Resistant
  • Biocompatible*
  • Chemical Resistant
  • High Detail/High Resolution
  • High Strength

Rigid Polyurethane

Utilizing digital light processing, this material exhibits high stiffness, good tensile strength, and impact resistance properties. Consequently, it is well-suited for applications requiring durable and structurally sound parts. RPU 70 boasts a Shore D hardness rating of 70 and demonstrates exceptional resistance to abrasion, chemical exposure, and wear and tear.

  • Black
  • Biocompatible*
  • Flame Resistant
  • Good for Snap Fits
  • High Ductility
  • High Strength
  • Rigid
  • Temperature Resistant

Rigid Polyurethane

It provides high print accuracy with superior mechanical properties. Additionally, it boasts excellent stiffness, toughness, and impact resistance. Moreover, it has a high heat deflection temperature of up to 120°C, allowing it to endure high-temperature applications without degradation.

  • Black
  • High Strength
  • Impact Resistant
  • Rigid
  • Temperature Resistant

Silicone

This material is highly compatible with the human body and boasts excellent elongation and tear strength, making it an ideal choice for medical and dental applications. It features a soft and flexible texture resembling rubber and has a Shore A hardness of 30.

  • Grey
  • Biocompatible*
  • Elastomeric
  • Flexible
  • Wear & Tear Resistant

Urethane Methacrylate

This digital light processing material has mechanical properties that surpass those of other materials. Its versatility makes it an excellent choice for various consumer products and industrial tooling applications. Furthermore, its superior strength and durability make it ideal for applications where other materials may fail. Moreover, its unique properties make it an attractive option for manufacturers looking for a reliable and effective solution. 

  • Multiple Colors
  • Biocompatible*
  • Chemical Resistant
  • High Strength
  • Rigid

*Special processing may be required. Please notify us of any biocompatibility needs.

Design Recommendations

When designing digital light processing (DLP) parts, it’s essential to consider several key factors. Firstly, the part’s orientation during printing can significantly impact the final product’s quality. In DLP printing, bottom-up curing of layers means that features that taper or overhang can negatively affect print quality. However, this issue can be addressed using support or a well-designed model. Moreover, since DLP printing can produce parts with fine details, it’s crucial to ensure that small features are adequately supported and printed at an appropriate resolution. Finally, it’s essential to consider the post-processing needs of the part, such as cleaning and finishing, and plan accordingly. By considering these factors, designers can create high-quality, functional parts using DLP printing technology.

Design Manual Poster
Feature Measurement

Connecting & Moving Parts

Rigid: 0.01 in
Flexible: 0.03 in

Escape Holes

Rigid: 0.04 in
Flexible: 0.04 in

Embossing & Engraving

Rigid:
W: 0.008 in
H/D: 0.004 in

Flexible:
W: 0.035 in
H/D: 0.02 in

Holes & Openings

Rigid: 0.008 in
Flexible: 0.035 in

Horizontal Spans

Rigid: 0.12 in
Flexible: 0.04 in

Minimum Features

Rigid: 0.004 in
Flexible: 0.04 in

Pin Diameter

Rigid: 0.004 in
Flexible: 0.04 in

Supports & Overhangs

Rigid: 25°
Flexible: 45°

Walls (Supported)

Rigid: 0.008 in
Flexible: 0.04 in

Walls (Unsupported)

Rigid: 0.012 in
Flexible: 0.098 in
Feature Measurement

Connecting & Moving Parts

Rigid: 0.25 mm
Flexible: 0.76 mm

Escape Holes

Rigid: 1 mm
Flexible: 1 mm

Embossing & Engraving

Rigid:
W: 0.2 mm
H/D: 0.1 mm

Flexible:
W: 0.9 mm
H/D: 0.5 mm

Holes & Openings

Rigid: 0.2 mm
Flexible: 0.9 mm

Horizontal Spans

Rigid: 3.05 mm
Flexible: 1 mm

Minimum Features

Rigid: 0.1 mm
Flexible: 1 mm

Pin Diameter

Rigid: 0.1 mm
Flexible: 1 mm

Supports & Overhangs

Rigid: 25° Flexible: 45°

Walls (Supported)

Rigid: 0.35 mm
Flexible: 2.5 mm

Walls (Unsupported)

Rigid: 0.2 mm
Flexible: 1 mm

Digital Light Processing Finishes

To ensure a high-quality final product, several steps must be taken when finishing and post-processing digital light processing (DLP) projects. Firstly, cleaning the printed object thoroughly is important to remove any excess resin. This can be accomplished by rinsing it with isopropyl alcohol and allowing it to air-dry. Secondly, the object may require curing using a UV light to harden the resin completely. This step can prevent the object from warping or cracking. Finally, sanding and painting may be necessary to achieve the desired finish. Sanding can help to smooth out rough surfaces or visible layer lines, while painting can add color and texture to the object. Overall, finishing and post-processing are essential components of DLP printing to ensure the final product looks great and functions well.

Digital Light Processing: EPX 86FR
Why choose Prototek for your next digital light processing project?

Prototek is a leading provider of high-quality Digital Light processing services, specializing in prototyping and low-volume production. With over 30 years of manufacturing industry experience, Prototek offers a comprehensive range of Digital Light Processing solutions, including engineering support, rapid prototyping, tooling and mold making, and production manufacturing. Our skilled team of engineers and technicians utilize state-of-the-art technology and equipment, ensuring the highest standards of quality and precision. Prototek is committed to customer satisfaction and understands the importance of timely delivery. They offer competitive pricing, fast turnaround times, and exceptional customer service throughout the project process. Choose Prototek for your next Digital Light Processing project and experience first-hand their commitment to quality, innovation, and customer satisfaction.

What do our customers say about us?
They are competitively priced for their services and a very personable team to work with. If you haven't used them - do it! You'll have a lifelong vendor you be happy with that repeatedly goes above and beyond what is asked.
Product Designer
We are extremely happy with the quality of the parts as well as the level of service - thanks!
VP Product Designer

Standard Drill Bit Sizes

Drill Size

Imperial

Metric

#107

0.0019 in

0.0483 mm

0.05 mm

0.0020 in

0.0500 mm

#106

0.0023 in

0.0584 mm

#105

0.0027 in

0.0686 mm

#104

0.0031 in

0.0787 mm

#103

0.0035 in

0.0889 mm

#102

0.0039 in

0.0991 mm

0.1 mm

0.0039 in

0.1000 mm

#101

0.0043 in

0.1092 mm

#100

0.0047 in

0.1194 mm

#99

0.0051 in

0.1295 mm

#98

0.0055 in

0.1397 mm

#97

0.0059 in

0.1499 mm

#96

0.0063 in

0.1600 mm

#95

0.0067 in

0.1702 mm

#94

0.0071 in

0.1803 mm

#93

0.0075 in

0.1905 mm

0.2 mm

0.0079 in

0.2000 mm

#92

0.0079 in

0.2007 mm

#91

0.0083 in

0.2108 mm

#90

0.0087 in

0.2210 mm

#89

0.0091 in

0.2311 mm

#88

0.0095 in

0.2413 mm

#87

0.0100 in

0.2540 mm

#86

0.0105 in

0.2667 mm

#85

0.0110 in

0.2794 mm

#84

0.0115 in

0.2921 mm

0.3 mm

0.0118 in

0.3000 mm

#83

0.0120 in

0.3048 mm

#82

0.0125 in

0.3175 mm

#81

0.0130 in

0.3302 mm

#80

0.0135 in

0.3429 mm

#79

0.0145 in

0.3680 mm

1/64 in

0.0156 in

0.3969 mm

0.4 mm

0.0158 in

0.4000 mm

#78

0.0160 in

0.4064 mm

#77

0.0180 in

0.4572 mm

0.5 mm

0.0197 in

0.5000 mm

#76

0.0200 in

0.5080 mm

#75

0.0210 in

0.5334 mm

#74

0.0225 in

0.5715 mm

0.6 mm

0.0236 in

0.6000 mm

#73

0.0240 in

0.6069 mm

#72

0.0250 in

0.6350 mm

#71

0.0260 in

0.6604 mm

0.7 mm

0.0276 in

0.7000 mm

#70

0.0280 in

0.7112 mm

#69

0.0292 in

0.7417 mm

#68

0.0310 in

0.7874 mm

1/32 in

0.0313 in

0.7938 mm

0.8 mm

0.0315 in

0.8000 mm

#67

0.0320 in

0.8128 mm

#66

0.0330 in

0.8382 mm

#65

0.0350 in

0.8890 mm

0.9 mm

0.0354 in

0.9000 mm

#64

0.0360 in

0.9144 mm

#63

0.0370 in

0.9398 mm

#62

0.0380 in

0.9652 mm

#61

0.0390 in

0.9906 mm

1 mm

0.0394 in

1.0000 mm

#60

0.0400 in

1.0160 mm

#59

0.0410 in

1.0414 mm

#58

0.0420 in

1.0668 mm

#57

0.0430 in

1.0922 mm

1.1 mm

0.0433 in

1.1000 mm

#56

0.0465 in

1.1811 mm

3/64 in

0.0469 in

1.1906 mm

1.2 mm

0.0472 in

1.2000 mm

1.3 mm

0.0512 in

1.3000 mm

#55

0.0520 in

1.3208 mm

#54

0.0550 in

1.3970 mm

1.4 mm

0.0551 in

1.4000 mm

1.5 mm

0.0591 in

1.5000 mm

#53

0.0595 in

1.5113 mm

1/16 in

0.0625 in

1.5875 mm

1.6 mm

0.0630 in

1.6000 mm

#52

0.0635 in

1.6129 mm

1.7 mm

0.0669 in

1.7000 mm

#51

0.0670 in

1.7018 mm

#50

0.0700 in

1.7780 mm

1.8 mm

0.0709 in

1.8000 mm

#49

0.0730 in

1.8542 mm

1.9 mm

0.0748 in

1.9000 mm

#48

0.0760 in

1.9304 mm

5/64 in

0.0781 in

1.9844 mm

#47

0.0785 in

1.9939 mm

2 mm

0.0787 in

2.0000 mm

#46

0.0810 in

2.0574 mm

#45

0.0820 in

2.0828 mm

2.1 mm

0.0827 in

2.1000 mm

#44

0.0860 in

2.1844 mm

2.2 mm

0.0866 in

2.2000 mm

#43

0.0890 in

2.2606 mm

2.3 mm

0.0906 in

2.3000 mm

#42

0.0935 in

2.3749 mm

3/32 in

0.0938 in

2.3813 mm

2.4 mm

0.0945 in

2.4000 mm

#41

0.0960 in

2.4384 mm

#40

0.0980 in

2.4892 mm

2.5 mm

0.0984 in

2.5000 mm

#39

0.0995 in

2.5273 mm

#38

0.1015 in

2.5781 mm

2.6 mm

0.1024 in

2.6000 mm

#37

0.1040 in

2.6416 mm

2.7 mm

0.1063 in

2.7000 mm

#36

0.1065 in

2.7051 mm

7/64 in

0.1094 in

2.7781 mm

#35

0.1100 in

2.7940 mm

2.8 mm

0.1102 in

2.8000 mm

#34

0.1110 in

2.8194 mm

#33

0.1130 in

2.8702 mm

2.9 mm

0.1142 in

2.9000 mm

#32 

0.1160 in

2.9464 mm

3 mm

0.1181 in

3.0000 mm

3.1 mm

0.1221 in

3.1000 mm

1/8 in

0.1250 in

3.1750 mm

3.2 mm

0.1260 in

3.2000 mm

#30

0.1285 in

3.2639 mm

3.3 mm

0.1299 in

3.3000 mm

3.4 mm

0.1339 in

3.4000 mm

#29

0.1360 in

3.4544 mm

9/64 in

0.1406 in

3.5719 mm

5/32 in

0.1563 in

3.9688 mm

11/64 in

0.1719 in

4.3656 mm

3/16 in

0.1875 in

4.7625 mm

13/64 in

0.2031 in

5.1594 mm

7/32 in

0.2188 in

5.5563 mm

15/64 in

0.2344 in

5.9531 mm

1/4 in

0.2500 in

6.3500 mm

17/64 in

0.2656 in

6.7469 mm

9/32 in

0.2813 in

7.1438 mm

19/64 in

0.2969 in

7.5406 mm

5/16 in

0.3125 in

7.9375 mm

21/64 in

0.3281 in

8.3344 mm

11/32 in

0.3438 in

8.7313 mm

23/64 in

0.3594 in

9.1281 mm

3/8 in

0.3750 in

9.5250 mm

25/64 in

0.3906 in

9.9219 mm

13/32 in

0.4063 in

10.3188 mm

27/64 in

0.4219 in

10.7156 mm

7/16 in

0.4375 in

11.1125 mm

29/64 in

0.4531 in

11.5094 mm

15/32 in

0.4688 in

11.9063 mm

31/64 in

0.4844 in

12.3031 mm

1/2 in

0.5 in

12.700 mm

33/64 in

0.5156 in

13.0969 mm

17/32 in

0.5313 in

13.4938 mm

35/64 in

0.5469 in

13.8906 mm

9/16 in

0.5625 in

14.2875 mm

37/64 in

0.5781 in

14.6844 mm

19/32 in

0.5938 in

15.0813 mm

39/64 in

0.6094 in

15.4781 mm

5/8 in

0.6250 in

15.8750 mm

41/64 in

0.6406 in

16.2719 mm

43/64 in

0.6719 in

17.0656 mm

11/16 in

0.6875 in

17.4625 mm

45/64 in

0.7031 in

17.8594 mm

23/32 in

0.7188 in

18.2563 mm

47/64 in

0.7344 in

18.6531 mm

3/4 in

0.7500 in

19.0500 mm

49/64 in

0.7656 in

19.4469 mm

25/32 in

0.7813 in

19.8438 mm

51/64 in

0.7969 in

20.2406 mm

13/16 in

0.8125 in

20.6375 mm

53/64 in

0.8281 in

21.0344 mm

27/32 in

0.8438 in

21.4313 mm

55/64 in

0.8594 in

21.8281 mm

7/8 in

0.8750 in

22.2250 mm

57/64 in

0.8906 in

22.6219 mm

29/32 in

0.9063 in

23.0188 mm

21/23 in

0.9130 in

23.1913 mm

59/64 in

0.9219 in

23.4156 mm

15/16 in

0.9375 in

23.8125 mm

61/64 in

0.9531 in

24.2094 mm

31/32 in

0.9688 in

24.6063 mm

63/64 in

0.9844 in

25.0031 mm

1 in

1.0000 in

25.4000 mm

1 1/64 in

1.0156 in

25.7969 mm

1 1/32 in

1.0313 in

26.1938 mm

1 3/64 in

1.0469 in

26.5906 mm

1 1/16 in

1.0625 in

26.9875 mm

1 5/64 in

1.0781 in

27.3844 mm

1 3/32 in

1.0938 in

27.7813 mm

1 7/64 in

1.1094 in

28.1781 mm

1 1/8 in

1.1250 in

28.5750 mm

1 9/64 in

1.1406 in

28.9719 mm

1 5/32 in

1.1563 in

29.3688 mm

1 11/64 in

1.1719 in

29.7656 mm

1 3/16 in

1.1875 in

30.1625 mm

1 13/64 in

1.2031 in

30.5594 mm

1 7/32 in

1.2188 in

30.9563 mm

1 15/64 in

1.2344 in

31.3531 mm

1 1/4 in

1.2500 in

31.7500 mm

1 17/64 in

1.2656 in

32.1469 mm

1 9/32 in

1.2813 in

32.5438 mm

1 19/64 in

1.2969 in

32.9406 mm

1 5/16 in

1.3125 in

33.3375 mm

1 21/64 in

1.3281 in

33.7344 mm

1 11/32 in

1.3438 in

34.1313 mm

1 23/64 in

1.3594 in

34.5281 mm

1 3/8 in

1.3750 in

34.9250 mm

1 25/64 in

1.3906 in

35.3219 mm

1 13/32 in

1.4063 in

35.7188 mm

1 27/64 in

1.4219 in

36.1156 mm

1 7/16 in

1.4375 in

36.5125 mm

1 29/64 in

1.4531 in

36.9094 mm

1 15/32 in

1.4688 in

37.3063 mm

1 31/64 in

1.4844 in

37.7031 mm

1 1/2 in

1.5000 in

38.1000 mm