Z stepper stabilizer

I know that Robo had a part designed that went under the z stepper, but I can not find it. Does anyone have a copy of the file?

 

I don't remember seeing one that Robo designed, but this is the one I printed and have been using from thingiverse: https://www.thingiverse.com/thing:3564800

 

Thanks, I went back and found this as well an I believe it was sent to me by Robo. I assume that PLA is no good for this that the stepper gets hotter than 120F. I will try PETG.