This is used in conjunction with some of Aderusha's DDD Wall Control components to make an easily printable and long lasting tape holder. 

You need two of the file supplied, 4 equal lengths of 3/8" rod, and whatever of the Aderusha components you want. I would recommend just two 2x0 Flat Right, and two 2x0 Flat Left components. 

You don't need to use aluminum rods, frankly, wooden dowels work fine.