| CPC B23Q 3/005 (2013.01) [B27C 5/04 (2013.01)] | 12 Claims |

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1. An apparatus configured for attachment to a work surface and comprising:
a first rail configured to be fixed to the work surface, the first rail having opposed first and second ends;
a second rail configured to be movable with respect to the work surface, the second rail having opposed first and second ends, wherein the first end of the first rail is hinged to the first end of the second rail; and
a tension element connecting the first and second rails, wherein:
increasing a distance between the second end of the first rail and the second end of the second rail stretches a length of the tension element by the distance; and
the tension element remains connected to the first and second rails.
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