Parameterized Battery Compartment

I need battery-compartments in various sizes for my projects, so i made a
openscad file that generates them for me. Just enter the battery type (AA, AAA, C or D)
and the number of batteries you need. Export the stl file and add it to your project or print it as a standalone box. The only thing thats needed (besides batteries) are litte metall stripes for the contacts.

http://www.local-guru.net/blog/2010/12/06/generative-battery-compartment