T Shaped Y Carriage Mounting Frame for Slim LM8UU Holder

T-shaped version of Jonas Kühlings Y Carriage mounting frame for 3 LM8UUs.

The drilling holes on the rod with two LM8UU holders *should* match the ones in the mendel/prusa build platform. I can't confirm this for sure as i dont have a prusa.

Use the scad file to change rod distance and the distance of the two LM8UUs that share a rod.

Thanks to Johnas Kühling, whose work this is based upon.