I'm making household objects. Feel free to link me to anything you make, and i will include them in the next update.

You will need a 3d-modeling software so that you can change the size of the drawing to fit your printer. Here are 2 free editing programs that you can use to edit the STL's.

SketchUp: http://www.sketchup.com/
Blender: http://www.blender.org/

Thanks for checking this out, and as always, Happy Printing =)