A common question I hear from my customers is, "What 3D materials are tough and which materials are best suited for certain applications?"  The second question I typically hear is, "What is the print speed?"  While not many new AM technologies are being developed, the same is not true with materials.  With innovations in 3D printing and materials development, entirely new business models are being unlocked.  3D printing is developing fast.  With ever-evolving technologies and materials, the range of addressable applications across industries has never been so varied or offered such huge opportunities.  No material can do everything.

The 3D Systems' Figure 4 DLP technology has been especially transformative.  Innovative new materials open up new production workflows for digital manufacturing.  Plastic printing materials are particularly versatile.  Listed below are industrial materials and applications applicable to the Figure 4 DLP technology.  These materials are a new class of additive materials with industry-leading UV stability.

Figure 4® Rigid 140C Black, Figure 4® Rigid White, Figure 4® Rigid Gray, Figure 4® Tough 60C White, Figure 4® Tough 65C Black, Figure 4® PRO-BLK 10: True production-class material; versatile rigid urethane-like material with an industry-leading combination of speed, accuracy and engineering-grade properties of strength, impact, and heat resistance.
GOOD FOR:  • Rapid prototyping • Functional assemblies • Snap-fit components • Consumer electronic components • Drill/tap applications • Master patterns for vacuum casting

Figure 4® 150C FR Black: 
GOOD FOR: • Aircraft interior parts • Consumer goods and electronics • Components requiring flame retardancy

Figure 4® FLEX-BLK 20 and Figure 4® FLEX-BLK 10: Extremely durable polypropylene-like parts Highest precision prototyping material with UV stability for production applications where mechanical properties fit.
GOOD FOR: • Prototyping • Functional testing • Low-volume production • Master patterns for RTV/silicone molding • Snap-fit assemblies

Figure 4® HI TEMP 300-AMB: High-temperature resistance for use in the harshest environments.
GOOD FOR: • HVAC, consumer appliances, motor enclosures, and other test or end-use components requiring high heat resistance • Low-pressure molding/tooling • Overmolding

Figure 4® RUBBER-BLK 10 and Figure 4® Rubber 65A BLK: High tear strength, malleable material for hard, rubber-like parts.
GOOD FOR: • Functional prototypes with rubber-like properties - Gaskets - Hoses - Seals • Low to mid-volume direct manufacturing of end-use parts • Strain-relief applications

Figure 4® MED-AMB 10 and Figure 4® MED-WHT 10: Materials with biocompatibility and autoclave stability for medical and industrial.
GOOD FOR: • Medical applications, including - Surgical drill guides - Splints - Anatomical or bone models • High-temperature applications

Figure 4® EGGSHELL-AMB 10: A rigid plastic for casting silicones to withstand injection at high temperature and pressure, but easy to break away. 
GOOD FOR: • Silicone castings • Customized end-use silicone parts • Low-volume production of silicone parts

With a better understanding of industrial materials discussed for the 3D Systems' Figure 4 DLP technology, I want to discuss the advancements in print speed.  Figure 4 offers ultra-high print speeds with 3 print modes, enabling up to 100mm/hour printing, some of the faster on the 3D printer market today.  The following is a good example from a service bureau printing aerospace check fixtures.  

• CHALLENGE: Deliver production-grade check fixtures for aerospace customer with a very fast turnaround.
• SOLUTION: Figure 4 with 3D Sprint software and Figure 4 TOUGH-GRY 15 material.
• RESULTS: 
  • 24 parts printed per tray
  • Print set up time - 7 minutes
  • Time to part in-hand - 91 minutes
  • Print time - 31 minutes
  • Post-processing - 60 minutes

To round out the key advancements of the 3D Systems' Figure 4, alongside the materials science and production-grade end-use parts at accelerated speeds, the new high-density part stacking feature of 3D Systems' 3D Sprint software allows efficient part nesting and optimized support generation to enable new efficiency in batch printing and post-processing.  Advantages of High-Density Vertical Stacked Printing over traditional methods 3D printing often leads to fast turnaround times without using expensive tooling.  Additive Manufacturing, AM serves as a great tool for prototyping and low/mid-sized production by using high-density vertical stacked printing.  Key drivers for stacked printing include:

• Productivity and Efficiency: by utilizing the full build height (350 mm) and stacking parts, more parts can be printed.  With 3D Systems' additive manufacturing workflow software, 3D Sprint, stacks can be easily generated and supported to maximize packing density, reduce post-processing, and decrease labor times.
• Strut Array Generation:  Quickly generate and replicate strut supports throughout a stack within 3D Sprint.  The open, sparse strut network maximizes solvent washing, air drying, and post-cure process effectiveness for batch manufacturing.
• Overnight Printing and Cadence: For manufacturers that do not work around the clock, there is a lot of wasted time at night that could be used for printing parts.  Prints can be planned more efficiently to improve throughput in a single day by printing less frequently, but with a larger yield.  If build times are too short, technicians would get overwhelmed from replacing builds for many printers.
• Automation Compatible: Another method for improving the efficiency of the entire workflow is by using automation.  With pinpoint contact strut supports allowing for quick removal of supports, automation can be used to clean, dry, and cure stacks of parts without human labor.  Multiple wash stations can be used for cleaning parts.

If you want to know more about the advancements of vertical stacking with the 3D Systems solutions please click the following: 3D Systems Application Brief - Industrial Stacking

If you want more information in general, feel free to visit us at www.mastergraphics.com or contact me directly at barb.miller-webb@mastergraphics.com

What is biocompatibility and how is it relevant to 3D printing? 

 “Biocompatibility is a general term describing the property of a material being compatible with living tissue. Biocompatible materials do not produce a toxic or immunological response when exposed to the body or bodily fluids. Biocompatible materials are central for use in medical implants and prosthetics to avoid rejection by the body tissue and to support harmonious biological functioning.”

3D printer materials have advanced in the medical field. So much that once what was impossible to imagine is now occurring. 3D printed technologies and materials have developed to the point that they are replacing traditional methods of bone and joint replacements in the human body. Knee replacements are often now printed in metal to replicate the replacement knee (using a scan to print an exact replica of the damaged knee) versus using the traditional method of machining net near shape knee and then working to make it fit. Let’s discuss a few of many applications specifically in the medical field. 

Biocompatible materials are used for 3D printing in various medical applications, including dental and orthopedic implants(spinal), drug delivery, hearing aids, tissue, craniomaxillofacial (CMF), dental, veterinary, and prosthesis. Common biocompatible 3D printing materials include polymers, metals, ceramics, composites, and carbon compounds. 3D printing facilitates the easy production of orthopedic implants, dental devices, surgical guides, anatomical models, medical tools, prostheses, and custom enclosures. Taking it one step further and not limited to the printing of organs, bone regeneration, and drug release.

Below I am highlighting some key application use cases with medical 3D printing:

• The applications of Anatomic Models is still highly used in 3D printing and Medical image data is the foundation of highly-accurate, patient-specific anatomic models that can be made in a variety of materials to support patient education and surgical planning.  

• A surgical guide is a medical device that is 3D printed based on the DICOM data which is patient specific. It is used for the accurate placement of the implant in the bone structure. It replicates the exact surfaces of the patient’s intraoral situation  
• And in today’s Covid 19 environment we are printing PPE devices such as masks, ventilators, swabs, and more...
• For instance, Align Technology produces transparent dental aligners – 17 million per year. With the help of 3D Systems 3D Printing. Most removable orthodontic appliances, including retainers and positioners, are made from plaster reference models; individual teeth on these models can be manually sectioned and repositioned with wax.
• Surgical implants and prosthesis is advancing due to innovations in the biocompatible 3D printing materials market.

If you are in the medical space, are you keeping up with the medical advancements in 3D printing?

Biocompatible 3D printing technology is being increasingly used for tissue regeneration in vascular tissue engineering applications. Players operating in the biocompatible 3D printing materials market use the technology to produce patient-specific devices in the biomedical field. 3D printing serves as a resource for the production of devices and systems in biomaterials, and in the field of tissue engineering.  

There are Major Challenges for Biocompatible 3D Printing Materials Market – Why?

Currently, only a few biocompatible materials are widely employed in the healthcare industry. The U.S. FDA (United States Food & Drug Administration) has not yet approved the research in the development of some biocompatible materials. This is restraining the global biocompatible 3d printing materials market.

With 3D printing, the possibility of making health not only accessible but also individually customizable. Each day companies are making exciting discoveries and opening new doors for patients and healthcare professionals alike. The medical world is changing rapidly, and 3D printing will continue to revolutionize the path forward.

Click the link below to read the case study by 3D Systems to see how biocompatible and functional microfluidic components for rapid and portable diagnostics testing were developed.  https://www.3dsystems.com/customer-stories/rapid-diagnostics-device-developed-using-figure-4-standalone

Reach out if you want to discuss other case studies or biocompatible solutions. 
barb.miller-webb@mastergraphics.com