I have been thinking of doing the same
1: Found mi ruler, measurements are in Centimeters, divide them with 2.54 to get inches.
here it goes:
Front/back cover: 12,5cm * 17,8cm
Sides: 17,8cm * 2,1cm (remember, you need 3 of these)
Top flap: 3,6cm (2,1+1,5) * 12,5cm
Bottom parts:
The one starting from front:12,2cm * 1,8cm (the missing part is 8,6cm * 0,9cm)
The one starting from back: 2,1cm * 12,5cm (missing parts are 2,0cm * 1,0 cm / 2,1cm)
The ones starting from the sides:3,0cm * 2,1cm (missing part is easiest to descibe in two parts: 2,0cm * 1,1cm [straight part] and 1,0cm * 0,6 cm / 0,4 cm / 1,1cm [rounded part])
Find cover scans from raws section and you should make sense what the measurements mean.
And one more thing: Imagine you rip the box open. the order parts go is: side 1, front, side 2, back and side 3. Side one goes on top of the side 3, it is the only seam you have to glue.
HOPE THIS ALL MAKES EVEN LITTLE BIT SENSE!!!!!!!!!
2:
- Paper: A3 size thin cardboard, maybe 250g/m³ thickness, with semi-glossy white surface on one side (for authenticity the other side must be cardboard color!!!).
- Printer: Color laser for durability.
3: Yes the two long sides are identical.