The lock bolt is in the mailbox does not always withstand the encroachment of the feeder bullies. Too primitive its form is thin and the iron from which it is made.
But if you replace the stock bolt with steel plate cross-section 20×3 mm, bent as shown, so just the box, no one will open.
Recommend to read
MACHINE FOR MY SON
The car was conceived and executed as a valid simulator for the novice driver — my 15-year-old son Maxim that he could get it driving skills, and also to assemble-disassemble and repair...
STEP BY STEP
Every time I talk about the French ships of interwar buildings, we have to remember the relevant Italian. The constant rivalry between the two Mediterranean Nations forced the designers...