Made this about 8 yrs ago, to get over my fear of circular saws
   and to try to make the smallest possible useful object i could
   with one out of scrap wood. Holds 3x5 index cards, which I like
   to work with now and again because of their
   retroness.[1]433081358_e71d856567_m

References

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   1. http://icopiedyou.com/wp-content/uploads/2015/12/433081358_e71d856567_m.jpg