Customizable Business Card Holder

Customizable rewrite of Markus Ortner's [Business Card Holder](http://www.thingiverse.com/thing:677783). Click **Open in Customizer** to fiddle with the number and orientation of the card slots as well as the size of the base. Some fiddling may be necessary to find settings that work well with your cards. For example, the default 1mm slot size is a bit too much for my sample cards; pulling one out tends to tip over some of its neighbors.

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Part of my [Parametric Remixes](http://www.thing