Here in Austin TX, there is a company, ICON that is trying to mass 3D print homes. It is not going so good. They are slower than framing, drywall & mason crews. Also final finish is ugly in my opinion.
"And even when it was successfully completed, the peroxide would still decompose slowly; not enough to start a runaway chain reaction, but enough to build up an oxygen pressure in a sealed tank, and make packaging impossible. And it is a nerve-wracking experience to put your ear against a propellant tank and hear it go "glub" —long pause — "glub" and so on. After such an experience many people, myself (particularly) included, tended to look dubiously at peroxide and to pass it by on the other side."
It is one of the books that is referenced all of the time over the span of my life. Realized I never thought to actually read it for myself...I recommend checking it off the list.
My iPhone or some app must be listening to my conversations and pulling out the subject of the conversation and putting that subject in ads on my web pages etc I'm reading. I have had this happen a few times in the last few weeks. I'll have a conversation with someone, they mention something which I know I have never searched for and the next time I go to a site that has ads, there is the...