Macintosh Performa 7100 mainboard bracket

Printed on a SLA printer, just to make sure it prints correctly. Printing it on a side on a FDM printer should be possible. Resolution should be 0.1mm and nozzle size should be 0.2mm as there are some exact measurements to adhere to.

As I am writing in my other designs. I am a total newb in regards of 3d modelling. If you can improve my design, feel free to do so! Attaching the 123dx file as well.