Rather, he built a very clever gas mixer for filling his homemade CO2 laser tubes, which only looks like a welding machine. (Video, embedded below.) We’ve been following [Lucas] on his journey ...

While the best LG OLED TVs can't be written off by any means, Hisense's L9Q short-throw laser TV box is a fascinating alternative to the biggest screens. What's not clear just yet, however ...