Click-Together 1U Spacer (Gravitrax compatible) (Rapid-Print)

So I was getting tired of these spacer blocks just coming apart wile building, so I decided to integrate a locking click-feature to make sure they stay together.  

By having the locking feature the printing tolerances and choice of material no longer become that critical.

I also tried to use as little material as possible to ensure a quick print.  Currently, one tile requires around 30 min.

Additional, there is a slot in the side so you can use a butter knife to separate them if they are too tight.

Note: First print two of them to see how they click together to one another and to your existing spacers.  Adjust the size in the slicer accordingly if needed.