The Y stepper motor metal bracket on the Adimlab i3 printer is very thin metal and it could bend easily. I also don't like how it is mounted only on the top of the 2020 extrusion which lends itself to come loose.

This is designed to be installed on top of the original bracket to aid in stiffening and provide a second mounting support.

Update: 9/24/18 finally got around to mounting this on the printer. It works great!
Update: 9/27/18 repaired the mesh and re-uploaded the STL file.