About this 3D model

This is a set of Viaducts that can be used with Marklin's Z scale track. It's limited to an oval configruation at the moment, but still pretty cool. This is an update to a previous design I made, which improves the clip used to keep the track sections together. There's 4 pieces in all. A R2-30 Degree curved section, a 110mm straight, a 110mm feeder, and the clip.