Duplo Track 90-degree cross and half-length straights (remix)

A Duplo-compatible 90-degree cross and half-length straight remixed to make printable on standard FDM printer without support.

Print one cross and four straights to make a figure-8.

Original designer [BrickFrog](https://www.thingiverse.com/BrickFrog/about) did a great job making accurate dimensions.