Two methods and four materials were used to fabricate the soft actuators. Two methods are: (1) the traditional casting process, (2) 3D printing using the Objet350 Connex3 printer (Stratasys, Minnesota, USA) and the Agilista printer (Keyence, Japan). Four materials are: (1) the Dragon Skin 10 (Smooth-on Inc., PA, USA), (2) the Ecoflex (Smooth-on Inc., PA, USA), (3) the TangoPlus or TangoBlackPlus (Stratasys, MN, USA), which mainly consists of propenoic acid, ethyl ester, and trimethylbicyclo, and has a hardness of Shore A26-A28 and an elongation at break of 170–220%, and (4) the AR-G1L (Keyence, Japan), which mainly consists of silicone and acrylate monomer, and has a hardness of Shore A35 and an elongation at break of 160%.
Objet350 connex3 printer
Manufactured by Stratasys
Sourced in Israel
The Objet350 Connex3 printer is a multi-material 3D printer manufactured by Stratasys. It allows the creation of complex and detailed models using a variety of materials. The core function of the Objet350 Connex3 is to produce high-quality 3D printed parts and prototypes.
Automatically generated - may contain errors
3 protocols using objet350 connex3 printer
1
Fabrication of Soft Actuator Prototypes
2
3D Printing of Personalized Anatomical Models
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The Mimics 3D image reconstruction software processed the image data [computed tomography (CT), magnetic resonance imaging (MRI), and CT angiography] (Materialise, Leuven, Belgium), which sorted tissues according to their grayscale and converted tissues within a certain range of grayscale into 3D images through the algorithm of the software. Data with the same grayscale but belonging to different tissues, such as the skull, vasculatures, tumor, and the nerve, were segmented and visualized with distinct colors. Objet350 Connex3 printer (Stratasys, Rehovot, Israel) was used in our study. The software (Objet Studio Ver. 9.2.11.6817) provided by the 3D printer was used to select colors and materials for different organs and tissues. The printed materials mainly included Support Fullcure 705, TangoPlus Fullcure 930, VeroWhitePlus FullCure 835, VeroClear FullCure 810, Objet RGD836 VeroYellow, Objet RGD851 VeroMagenta, and Objet RGD843 VeroCyan. STL (stereolithography) files saved by Mimics were inserted into the printer; elements such as texture, color, transparency, and softness for different tissues were set. During printing, the printer sprayed the materials onto the build tray layer by layer; every layer of materials was cured by UV light. After printing, the model would be checked with the reconstructed image, and the extra materials were removed by washing.
3
Craniofacial 3D Printing Workflow
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The printing procedure has been thoroughly described in our previous study [15 (link)]. Briefly, the Mimics 3D image reconstruction software (Materialise, Leuven, Belgium) was used to process the data obtained from CT, MRI, and CTA scans to create a 3D reconstruction of the craniofacial strutures. The reconstruction was then transformed into a STL file. Objet350 Connex3 printer (Stratasys, Rehovot, Israel) was used in this study. Then, the STL files were loaded onto the printer, and parameters such as texture, color, and transparency were set using the Objet Studio software (Ver. 9.2.11.6817). Printing materials included Support Fullcure 705, VeroWhitePlus Fullcure 835, Veroclear Fullcure 810, Objet RGD836 Vero Yellow, Objet RGD851 Vero Magenta, and Objet RGD843 VeroCyan. The printer sprayed the materials onto the build tray, and every layer of materials was cured by UV light. After printing, the model was visually cross-checked with radiological scans.
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