Light Box MK 1

Notes:
The measurement for the corner flats are taken from this project, but remodeled it myself. https://www.printables.com/model/116797-corner-brackets

All the measurements in the build instruction is just for reference purposes. Feel free to modify it to fit your own need. The current measurements are designed to be comfortably used for A4 papers.

Materials Needed
1 x 380 x 3 x 532 mm white corrugated plastic sheet
1 x 380 x 3 x 532 mm black corrugated plastic sheet
8 x 19 x 2 mm neodymium disc magnets

A lot of hot glue. A lot of it.
Enough LED strip to circle the inside.
Enough aluminum foil to warp the inside.

Parts Needed
4 Corner Flats
4 Corner with Magnets
4 Long Bars and 4 for the bottom variant
2 Short Bars and 2 for the bottom variant
1 Grommet

Build Instruction

1. Prepare the corrugated plastic sheets.
   1. Cut the white sheet in half for top and bottom. We will refer to them as white sheet (top) and white sheet (bottom).
   2. Cut 2 strips from the black sheet that is 7 cm tall and the same length as the white sheet (top)'s short side (266mm). Make sure that the lines runs top-bottom.
   3. Cut 2 strips from the black sheet that is 7 cm tall and the length of the white sheet (top)'s long side - 6mm (374mm). Make sure that the lines runs top-bottom.
2. Print the corners and the grommet.
   1. Using hot glue, glue down 4 magnets into their respective pocket in the bottom of corner magnets. Make sure that all 4 magnets are of the same polarity
3. Using hot glue, join the cut black sheets and white sheet (top) with the corner flats. Corner magnets are friction fitted.
4. Optional: If your cutting isn't accurate or if you want to make double sure, measure the distance between the corner flats and corner magnets and adjust the length of the side bars for both the long and short bars.
5. Print the long and short bars.
   1.  Using hot glue, glue the bars in place.
6. Cut out correctly sized aluminum foil strips to line the inside. Also cut out a piece to line the white sheet (bottom)
7. Flip the white sheet (bottom) over and place it centered on the bottom of the box you have created. place the remaining magnets on and mark their locations.
8. Put a dot of hot glue on each of the marked locations and put the magnet on.
9. Remove the bottom cover, and circle the inside with LED strips.
10. Cut a hole for the grommet. 
11. Optional: If your LED strips come with a USB head, split the grommet into 2. at the hole.
12. Make sure that the cable for the strip doesn't cover the LED. Feed the cable through and use the grommet.
13. Completion.