adjustable / retractable display case design

Reprap Discount Smart Controller 2004 adjustable / retractable display case design with 30x30 aluminum profile fastening.
Previously it used a fixed external support, but this element was disturbing every time that I move the printer. In addition, the inclination was fixed.
A video of the thing is here: https://www.youtube.com/watch?v=45mHTUPVNpM
Characteristics / instruction:
- Fixing in profile 30x30 with 2 M4 screw 10 mm.and hammer nuts with flat screws (has a version of the brackets - not tested - for 20x20 profile).
-All other parts are fixed with self-tapping bolts of 12 mm
-With means of guides / rails the visor can be retracted completely above the aluminum profile
-can take two inclinations: horizontal and 45 °
-handsaw in use 45 °
-The adjusting wheel can be replaced with a new one (in my case the heated bed shock with the original wheel)

custodia a scomparsa regolabile con fissaggio a profilo in alluminio 30x30 per Reprap Discount Smart Controller 2004
In prece