The German Fraunhofer Institute (Fraunhofer ILT) and its partner Rapid Shape are developing a new light-curing 3D printing technology, TwoCure, which features no need to add support structures for resin 3D printed parts. Eliminating the need to add support structures not only saves the user's CAD model preparation time, but also simplifies the post-processing steps for light-cured 3D printed parts.
At present, the development of TwoCure3D printing technology has made new progress. In addition to perfecting the 3D printing process itself, the research team also automates the integration of 3D printing equipment based on TwoCure process. In this issue, 3D Science Valley and Gu You will learn about the progress made by the Fraunhofer research team in this regard.
Integration of automated post-treatment processes
TwoCure forms parts through the interaction of light and cold. This process is similar to the widely used SLA 3D printing technology. It also uses photolithographic exposure to cure the photosensitive resin material layer by layer. 3D Science Valley understands that TwoCure differs from SLA 3D printing technology in that parts do not need to add support structures.
TwoCure 3D printing prototype
During TwoCure 3D printing, the printed parts are cured under the warm light. At the same time, the cooled space freezes the thermosetting components created layer by layer with the resin into a block, like wax. These waxy wrapping materials will be melted at room temperature after the prints are taken out. Parts are ready for use after simple cleaning and post-curing.
3D printed prototype wrapped with waxy material. Image credit: Fraunhofer ILT
Currently, a prototype of the TwoCure3D printing device has been launched, and the Fraunhofer research team is developing an automated process based on the TwoCure 3D printing device. After the integration of automation technology, the 3D printed parts through TwoCure technology will be automatically removed from the printing device and placed on the melting rack to melt out the waxy material wrapped.
The team's plan is to extend the automation function to the next cleaning and post-curing links, and automatically complete the entire process from 3D printing to post-printing processing, so that users only need to manage virtual printing tasks, and specific 3D printing tasks are handed over. Let the automation process do it.