Waterproof (from above)
Step 1: Heated,cut,pierce
the folding of the pvc bars is done with the torch, I cheated..I took the pvc bars that I cut into a trash.
Step 2: Pierce
With the soldering iron (be careful with the fumes!) to have the right size and even screw the screws of-in.
Step 3: Cut
The four corners so that the lid closes well without problems, with the time this will do and it will be less hard.
I stuck the strap in the cork
Step 4: Take Advantage of It to Find a Place to Screw It!
Step 5: Trick
This production uses a lot of pucks .. like me drink beer with capsules! crush and pierce them