Stereolithography printers, instead, use a laser (SLA) or UV-LED ((m)SLA) to photo crosslink a liquid resin to solid objects layer by layer . Arguably, in a time when the world is trying to reduce the use of plastic materials, 3D printing seems counterintuitive in terms of "green" materials. More sustainable and biodegradable materials are available nowadays , but mostly regarding FDM and filaments consisting of recycled PETG and bio-sourced PLA . The same does not apply to SLA printers for which the final crosslinked object cannot be recycled and the main components of the resins still derive from petroleum-sourced products. It is, therefore, necessary for SLA 3D printing to go one step further and detach as much as possible from fossil sources and shift to using biobased components.