Belt sander:
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Manual ratchet, loosening, tightening the nut
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The bulldozer starts, leaves
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Drill machine
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Expects to be jammed, Bulldozer starts
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Metal file
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Sand is poured, screenings
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Circular Saw Blade Closing
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Concrete mixer
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Hammers, Home construction, saws,
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Laying,, skating rink, Road construction
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Belt sander
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Grinder
★★★★★