OpenCAL: Revolutionizing 3D Printing for ASEAN Factories

A New Era in 3D Printing for ASEAN Manufacturers \\[10pt]\\ The University of California, Berkeley, has unveiled OpenCAL, a groundbreaking build-it-yourself volumetric 3D printer that can create complete parts in just 90 seconds. This innovative technology, which costs around $1,600 to build, could be a game-changer for factories in Thailand, Vietnam, Indonesia, and Malaysia. \\[10pt]\\ **What is Volumetric Additive Manufacturing (VAM)?** \\[10pt]\\ Unlike traditional layer-by-layer 3D printing, VAM solidifies an entire object simultaneously within a rotating vial of resin. This process, known as Computed Axial Lithography (CAL), was developed by researchers at UC Berkeley and Lawrence Livermore National Laboratory. In CAL, a projector sends a series of light patterns into the spinning resin, causing it to solidify in the desired shape. The result is a part with no layers, no support structures, and no moving print head. \\[10pt]\\ **Implications for ASEAN Factories** \\[10pt]\\ For manufacturers in Southeast Asia, the potential benefits are significant. In Thailand, where the automotive and electronics industries are booming, OpenCAL could accelerate prototyping and production, reducing time-to-market and lowering costs. Vietnamese factories, particularly those in the mold and die sector, could leverage this technology to produce complex parts more efficiently. In Indonesia, where the food packaging industry is growing, OpenCAL could enable the rapid creation of custom molds and tools. Malaysian manufacturers, especially in the semiconductor and medical sectors, could benefit from the precision and speed of VAM. \\[10pt]\\ **Building and Using OpenCAL** \\[10pt]\\ The OpenCAL V2 printer is designed to be accessible and easy to assemble. It uses a consumer LED projector, a Raspberry Pi 5, and a stepper-driven vial mount, all housed in a compact aluminum frame. The machine can be assembled by one person in about five to six hours, and the documentation includes detailed wiring diagrams, assembly instructions, and post-processing procedures. \\[10pt]\\ The software, called Tomo, is a free Windows application that converts STL files into print sequences. This user-friendly tool is built on VAMToolbox, an open-source Python library. The printer runs on open firmware and loads print files from a USB drive, making it simple to use even for those with limited technical expertise. \\[10pt]\\ **Resin and Licensing** \\[10pt]\\ One of the key challenges in volumetric 3D printing has been the availability of suitable resin. Formlabs now produces a UDMA-based resin specifically for OpenCAL, which is available through Prusa Research's online store. This makes it easier for factories to source the necessary materials. The hardware is released under the Prusa Open Community License (OCL 1.1), and the software and firmware are hosted on GitHub. This open-source approach encourages collaboration and innovation, allowing the technology to evolve rapidly. \\[10pt]\\ **Early Adoption and Future Prospects** \\[10pt]\\ Universities, national laboratories, and makerspaces across the globe have already started building and using OpenCAL. In ASEAN, several institutions and hobbyists are exploring the technology, and the community is growing. The Berkeley team plans to host a one-day build workshop in February 2027, alongside their annual volumetric manufacturing symposium, VAM27@Berkeley. \\[10pt]\\ **Conclusion** \\[10pt]\\ For factory buyers in ASEAN, OpenCAL represents a significant opportunity to enhance productivity, reduce costs, and stay competitive. With its affordability, ease of use, and open-source nature, this technology is poised to become a standard in the region's manufacturing landscape. As more factories adopt OpenCAL, the technology will continue to improve, driving further innovation and efficiency in the industry. \\[10pt]\\ **Takeaway for Factory Buyers** \\[10pt]\\ Consider investing in OpenCAL to streamline your production processes, reduce lead times, and gain a competitive edge. The technology is not only cost-effective but also supported by a growing community of users and developers, ensuring continuous improvement and support.