Thanks Rafal, you are incredible!
So there's the corrected version. I'll post a tutorial for making the belt from the templates.
For the structure you have conviced me and i will go for a 2 layer belt.
I'm currently working on the weathering of the pouches, trying differents methods and the results seems encouraging.
I update post #1 adding zip files with documents 8, 9a and 9b.
Now that the tutorial is almost finished, i can calculate the total cost of the belt :
For the structure of the pouches, i use plywood (cost 3$) but using MDF, heavy cardboard, foamboard... divide the cost by 2 to 4.
For the leather layer, the cost of the material i used is approximately 7$ for a piece of 40 x 55 in . I think that is sufficient with optimization.
For the magnet, the cost is approx 3$
The rest is constituted by glue, sewing cotton, tape, velcro. Cost is approx 7$ (difficult to calculate because i had already those).
So i think that the maximum cost is approx 20$.
When my belt will be finished (sewings with dremel are going to make me crazy
), i will have time to work on my next project : Light and sound ESB blaster from scratch (using WOF templates) for 20 $ (again
).