I took a big metal box with tea leaves inside and applied constant rotating motion to it. Can be looped perhaps. Hint: it was recorded at 96 khz, try playing this at 41,1 khz, sounds interesting. Recorded with zoom h1. No postprocessing.
Old socialistic circular saw from northern czech republic. Recorded at the end of october 2015, the best was to have recorder in next room. Recording was made on h1 zoom handy recorder and edited in professional sound studio (motor was filtered off).
Dremel cutting nails that were on a piece of wood. Recorded with zoom h1. Micro retífica cortando pregos que estavam em um pedaço de madeira. Gravado com zoom h1.
Striking a silver goblet then making it sing by rolling a wooden dowel around its edge. The first part is the top of the goblet (lower pitch) and the 2nd part is the bottom base (higher pitch). Followed by various strikes and rolls. Microphone: iphone 3g.
Dremel cutting plastic. Recorded with h1 zoom while working in my workshop. Micro retífica circular cortando plástico. Gravado com zoom h1 durante trabalho em minha oficina.
