Customizable Bolted Rod Clamp

This is a customizable bolted clamp for use with an optics mounting post. Sometimes you need to hold something heavier in place, or just out of the way, and don't mind scratching the rod/post.

The default STL is for an 8mm post with M3 bolts and nuts.

This component was inspired by the [Open-source optics project](http://www.appropedia.org/Open_source_optics), whose goal is to radically reduce the cost of scientific optical hardware, by the [Michigan Tech's Open Sustainability Technology R