UV Light Box

Cyanotypes are exposed in sunlight.  Transparencies (or objects) are placed on the prepared paper; sandwiched between a wood board and a plexiglass (more on this later-- with photos).  I have to shlep this from my dark basement to the front door and outside.  This process is unpredictable because of the variations in sunlight and hard on my back.  I am looking into building a UV light box to keep in my basement.  I have not found "perfect" instructions for my needs, but will hopefully be able to work something out based on my finds (see links).  Things to consider: the light needs to come from above (I could try from below, but don't know if it will work), the light needs to be very bright and even, and the box may need a fan for safety. It would also be nice to be able to adjust the light. I looked into purchasing ready-made light boxes but they are VERY expensive.

http://www.ehow.com/how_5004694_make-uv-light-box.html

http://www.apug.org/forums/forum42/61740-deliberations-building-uv-light-box.html

http://thinkaboutphotography.blogspot.com/2012/02/new-bigger-and-better-uv-light-source.html

http://www.shutterbug.com/content/how-tobrbuild-contact-printing-light-source