Impossible Pipe Elbows: made from standard pipe fittings held together only by their threads. A hard to find “impossible” object- no glue of any kind was used in its making. Design inspired by puzzle maker and artist Saul Bobroff. Another “how was it made” puzzle in my collection. ➡️ Follow the link in my profile for info on where to get this and other “impossible” objects along with other amazing items featured here on @physicsfun #mechanics #physics #physicsfun #engineering #STEM #machanicalen