As an experiment in transparent printing, I embossed hexagons into the lid to make it half as thick except for the ribs between the hexagons, and printed in 3D Printing Canada PC+ Transparent filament using a max of 20 mm/s for the bottom 6 layers.  Transparency isn't great - it would probably improve using the various suggestions from the Prusa Blog and other forum posts.

I also embossed the word “Voltmeter” on the lid using 3D Printing Canada PC+ White.  Import the STL file for the lid instead of the STEP file if you want to avoid the lettering.

To print the lid:

• Import the STEP file (not the STL which excludes the lettering) for the lid.
• Place the top of the lid on the build plate.
• Set up for multicolour printing (single extruder multiple colours in my case) using the instructions by minor havoc from [https://forum.prusa3d.com/forum/postid/562228/](https://forum.prusa3d.com/forum/postid/562228/)
• Assign “SOLID_A” to the default extruder (transparent in my case), and all letters “Componentxx_B” to extruder 2 (white)
• Split the model into 2 at the 1.2 mm layer, and change the following parameters for “SOLID_B” to 20 mm/s: 
  • external perimeters
  • gap fill
  • infill
  • perimeters
  • small perimeters
  • solid infill
  • top solid infill
• I didn't do this, but I think it would help clean up the letters - change the same speed parameters for all the letters (named “Componentxx_B”)
• Everything else default except possibly 0.2mm STRUCTURAL w/ Gyroid infill, 0.4 mm nozzle

I printed the box bottom and latches from 3D Printing Canada PETG+ Blue and White with standard settings (0.2 mm layers, 0.4 mm nozzle, full MK4 IS).

I didn't print a seal but the STL file is there for it.  I also included my Fusion360 export for your amusement.

Uses 6 M3x30mm bolts for the hinges and latches.