This project started with the hinges I found on this platform. From there it progressed in completely closing my CTC with doors and a lid/top-cover. I planned on adding hinges to the lid as well, but decided to keep it separated from the printer so I didn't need to drill more holes close to the y-axis rod and because the lid, when opened, would need to go further to the back than the position of my printer allows. Now I just take it off and put it aside, when necessary.

I didn't change the hinges, but did redraw them in Freecad. New stl files are attached.
The DXF files are the cutting template for the doors and top-cover plates. The front doors are a bit larger than the front opening, the side doors fit into the side openings. I used 3 mm acrylic which I cut by hand using a special knife. Laser cutting is preferred....
Because of the thickness of the acrylic, I added spacers between the hinges and the doors. 6 mm for the side doors and, in the beginning, 3 mm for the front doors. I later changed them for 2mm spacers for a less tight fit.
I made drill templates for the printer case and for the doors. They can be mirrored by physically turning them around, so you need just one for each door/side.
On the top-cover I used the corner parts as a drill template (Tape it together first to be sure all plates are positioned right)

I screwed everything together using M3 nuts and M3 allen bolts (M3x8, M3x10, M3x12 & M3x16). The knobs allow use of round magnets (12 x 2 mm). You can then put some flat (iron) screw is the case that allow the magnets to snap to the case.

For the top-cover/lid I used brushes from the local hardware store. These brushes are used in (Deltafix) mailbox weather strips. They're easily cut to size and slide in the brackets. This design is a result of the filament holders I decided to use. It allows the filament, and the extruder cables, to go through and still keep the entire setup closed.

All the parts:

Doors:
8x Hinge, Hingebracket & Pin; 2 for each door
4x 2mm spacers; 2 for each front door (3mm spacer for tight fit)
4x 6mm spacers; 2 for each side door
12x M3x12; Front door hinge
12x M3x16; Side door hinge
2x Front door knob
4x M3x8
2x Side door knob
4x M3x10
32x M3 nut

Top-cover/lid:

Acrylic plates:
Top plate 400 x 270 x 3 mm
Front plate 400 x 150 x 3 mm
(2) Side plates 264 x 150 x 3 mm
(2) Back plates 170 x 150 x 3 mm

4x Corner inside & Corner outside; for all 4 top corners
1x Rear bridge inside & outside; joins 2 rear acrylic plates
2x LF (Left Front) + RR (Right Rear) inside & outside corners; bottom corners
2x LR (Left Rear) + RF (Right Front) inside & outside corners; bottom corners
70x M3x12
70x M3 nut

Optional:
2x L+R Brush holders; Left & Right brush holder
1x Rear brush holder: <--