About this 3D model

I have need to mount a servo onto a shelf facing sideways. This thing will allow you to put a servo into a snugly fitting sleeve, and then slide that sleeve onto a shelf. The OpenScad will let you play with the sizes, including an offset which is used to specify the height of the mount (0 would be flush with the shelf). I took my measurements from this servo from AdaFruit: http://www.adafruit.com/index.php?main_page=product_info&cPath=34&products_id=155 I think it's a fairly standard size. Note that you typically have to remove the top or bottom from the servo to fit it into the mount. Taking off the top is easiest.