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Home 3D Printer SanDraw provides insights into 3D printing of silicones –
Interview
 * 3D Printer


SANDRAW PROVIDES INSIGHTS INTO 3D PRINTING OF SILICONES – INTERVIEW

By
Doris
-
Oct 10, 2024

Founded in Silicon Valley in 2014 and headquartered in Taiwan the following
year, SanDraw has become a significant contributor to the silicone 3D printing
industry. The company specialises in Fluid Additive Manufacturing (FAM), a
technology patented in 2017, which was developed specifically for RTV (Room
Temperature Vulcanising) and LSR (Liquid Silicone Rubber) silicones. In an
interview with 3Druck.com, SanDraw shares its expertise and valuable insight
into the field of silicone-based 3D printing.

SanDraw offers a range of professional-grade silicone 3D printers, including
models S053, S180, S300, and S400. These printers are tailored to different
industry needs, enabling the production of high-precision components with
mechanical properties that rival traditional manufacturing methods. The
company’s systems are used in industries such as robotics, medical devices,
electronics, and industrial machinery, where high-performance, flexible
materials are essential.

A key feature of FAM technology is the ability to print with medical-grade
silicone, offering a range of hardness from Shore A 18 to Shore A 70. This
versatility allows for the creation of customised products like robotic
grippers, sensors, and industrial seals, ensuring a broad range of applications.

SanDraw’s 3D printers are supported by its proprietary FAMufacture software,
optimising the printing process for maximum precision and efficiency. As demand
for silicone 3D printing grows, the company remains committed to innovation,
continually advancing its technology to meet the evolving needs of various
industries.


INTERVIEW WITH SANDRAW

In an interview with 3Druck.com, SanDraw discusses the benefits of using
silicone in 3D printing, highlighting its flexibility, durability and
temperature resistance. They see great potential for silicone 3D printing in
industries such as medical and mechanical engineering, particularly for the
production of custom components such as medical devices and robotic parts.
SanDraw is also focusing on improving printing speed and efficiency, while
addressing challenges such as complex designs and post-processing.

In your opinion, what are the key advantages of using silicone as a material in
3D printing?

> S400 silicone 3D printer, Image: SanDraw
> 
> San Draw’s 100% pure silicone, specially developed for 3D printing, offers
> superior flexibility, durability, and elasticity compared to standard
> commercial silicones. It resists yellowing and brittleness over time, making
> it ideal for producing flexible, impact-resistant objects.
> 
> With mechanical properties like mould-grade silicone, it enables seamless
> transition from prototyping to mass production. San Draw’s silicone
> outperforms other 3D-printed soft materials, such as TPU and photopolymer
> resins, in both temperature tolerance (-50°C to 250°C) and long-term
> performance. Additionally, it supports complex designs using water-soluble
> support materials, offering greater design freedom.

In which industries do you see the greatest potential for silicone 3D printing
and what unique applications could it enable?

> San Draw’s technology and equipment demonstrate significant potential in
> fields such as medical, mechanical engineering, and bioengineering, offering
> cutting-edge prototyping and R&D capabilities that drive innovation for both
> academia and industry.
> 
> As industries evolve, the demand for mass customisation of complex structures
> continues to grow. However, silicone 3D printing often faces challenges with
> liquid material moulding. To address this, San Draw has developed
> water-soluble support materials specifically for silicone. In 2024, we
> introduced the latest water-soluble support material, successfully printing
> lattice structures that meet the complex design requirements of silicone,
> overcoming previous technical limitations.
> 
> In medical applications, the flexibility of silicone 3D printing makes it an
> ideal choice for producing medical devices. We have printed various models for
> clinical and research use, including sleep apnea mouth guards and anatomical
> models of noses, ears, hearts, and brains for medical education and research.
> These innovations enhance learning and knowledge transfer, while all our
> silicone products are ISO10993 certified for biocompatibility, making them
> suitable for medical teaching aids.
> 
> 3D printed silicone lattice structure, Image: SanDraw
> 
> In engineering, silicone’s elasticity and durability are perfect for
> manufacturing critical components like robotic grippers, seals, and sensors,
> improving operational efficiency and expanding robotic applications. The
> precision of our printing enhances the ability of robots to perform intricate
> tasks.
> 
> Silicone’s resistance to extreme temperatures also makes it an ideal material
> for seals and shock absorbers, maintaining stable performance under harsh
> conditions, reducing failure rates, and extending product lifespan. By
> combining silicone with advanced 3D printing technology, we can produce custom
> seals with improved efficiency and accuracy, meeting diverse industry needs.

Additive manufacturing has developed continuously over the last few years. Which
innovations or technological breakthroughs do you consider to be particularly
important?

> In the continuous advancement of additive manufacturing, we are currently
> focused on enhancing the speed of silicone 3D printing to meet the increasing
> production demands. The current printing speed affects overall efficiency and
> hampers large-scale production. Therefore, optimising printing speed is a
> crucial objective for us.
> 
> To achieve this, we are actively adjusting our equipment by optimising motion
> trajectories, reducing printhead movement distance, and improving movement
> accuracy to minimise unnecessary pauses and streamline the printing process.
> Additionally, we are optimising the silicone’s properties, including
> viscosity, and curing time, to shorten post-processing without compromising
> print quality, ultimately accelerating production speed.

What challenges need to be overcome to advance the use of silicone in 3D
printing in future?

> In advancing the application of silicone in 3D printing, we face several key
> challenges. While we maintain full control over the design and manufacturing
> of hardware and software, this requires significant investment in resources
> and time for technical innovation and product upgrades to remain competitive.
> We are committed to promoting silicone applications to meet the increasingly
> diverse market demands.
> 
> The market for silicone in 3D printing is still relatively small, and the use
> of liquid silicone is limited, with many perceiving various constraints. To
> address these challenges, we have introduced water-soluble support materials
> and enabled the creation of complex structures and hollow objects while
> simplifying post-processing. Our goal is to lower the barriers to equipment
> usage.
> 
> Lastly, we aim to enhance printing speed and efficiency while maintaining
> high-quality standards. These efforts will further advance silicone 3D
> printing technology.

Here you can find more information on SanDraw.

--------------------------------------------------------------------------------


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 * TAGS
 * 3D printer for silicone
 * 3D printing silicone
 * additive manufacturing silicone
 * Fluid Additive Manufacturing (FAM)
 * Interview
 * SanDraw

Doris

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