Marble Machine Clip

This is an alternate clip to hold the pieces of [Jazzmyn's Customizable Marble Machine](http://www.thingiverse.com/thing:892619) together. The clip has a block in the back of it designed to hold a cylindrical magnet. Using these clips with magnets inserted and the track pieces from Jazzmyn's Customizable Marble Machine you can build a marble track that mounts to a ferrous metal surface.

This clip is a much tighter fit on the track pieces than the original clips from Jazzmyn's set. They have a