It's probably something similar in concept to Markus Kayser's solar sinterer[1], but with the light being focused onto an optical fiber bundle whose endpoint is

It's probably something similar in concept to Markus Kayser's solar sinterer[1], but with the light being focused onto an optical fiber bundle whose endpoint is moved around in X and Y, rather than moving a basket of regolith. [1] https://www.youtube.com/watch?v=ptUj8JRAYu8&t=240 https://www.youtube.com/watch?v=ptUj8JRAYu8&t=240