Month: August 2011

In the Maker Shed: Poulsen’s Wire Recoder Kit

Poulsen’s Wire Recoder Kit, from the Maker Shed, uses wire and magnetism to record sound. Danish engineer Valdemar Poulsen discovered that it was possible to record electrical signals in magnetic material and invented the magnetic wire recorder (telegraphone) in 1898. This simple yet fascinating kit lets you explore this phenomenon not just on wire but anything magnetic! Save your voice on scissors, chairs, or even an escalator!

Top 10: Knifemaking

Top 10: Knifemaking

Knives are a major “gateway drug” for many a young maker. They were for me, certainly. One of the first things I ever remember being proud of making was a cocobolo replacement handle (mounted with homemade “mosaic” pins) to repair my mother’s favorite paring knife. (Coincidentally, both skills are covered in this round-up.)