How to Make Anything (Using Acrylic and Machine Screws)

How to Make Anything (Using Acrylic and Machine Screws): "It is a technique we call Interlocking T-Bolt Construction. It consists of a T-cutout in one piece of acrylic (or any 3 mm stock) and a receptacle in another piece. These pieces can then be bolted together making a very secure 90 degree joint. A deceptively simple technique that has unlimited possibilities."