If you have ever used a scalpel to cut something tougher than an eraser, you can appreciate a hot knife or better yet, an ultrasonic cutter. Saws work too, but they have their own issues. [This Old ...

Here’s something that may be of interest to all the reprappers, vacuum formers, and other plastic fabbers out there: ultrasonic welding of plastics. If you’ve ever wanted to join two pieces of plastic ...

Seattle Ultrasonics, a Seattle-based manufacturer of household knives, has developed an 'ultrasonic knife' that emits ultrasonic waves that are barely noticeable at the touch of a button, allowing you ...