Tablet Mount

The part is used to hold a tablet on top of the printer with a 2020 extrusion bar. It can be used in two configurations;
1- Use two open parts on right and left
2- Use one closed part with one open part
The screw hole is 4 mm, I used an M4x10 mm oval head with a nut and a printed slot from:
https://www.thingiverse.com/thing:1061769