Anybody use this toothpaste? If so, THROW IT AWAY! I went to the dentist today to have my teeth cleaned and during my cleaning I was asked if I use Crest 3D whitening. I said I did and asked how she ...

While we don’t often see them in the hobbyist community, 3D printers that can extrude gels and viscous liquids have existed commercially for years, and are increasingly used for biological research.