2001. shaduf. or Shaduf (both: shdf, sh df) (KEY) , primitive device used to lift water from a well or stream for irrigation purposes. Essentially the device consists of a long boom balanced across a horizontal support from 8 to 10 ft (2.4 3 m) above the ground. The beam has a long, thin end and a short, stubby end.
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Wet tumblers use stainless steel media. The preferred media is 0.040 diameter by .250 long, 300-series stainless steel pins. The pins are smooth; they will not erode or work-harden the brass, and they can be reused indefinitely.his month, we'll take a look at wet tumbling with stainless steel media. Unlike dry 'tumbling' which uses a vibratory bowl cleaner, wet tumbling uses an actual tumbler, similar to the kind that were originally designed for polishing rocks.