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
HAMMER-THE MAGICIAN
In my experience that after the publication in the journal "modelist-Konstruktor" home-made car (like mine in the January number for 1971) are the authors of many cities requesting them...
TRACTOR “HUMMINGBRI”
A thrifty owner, especially a rural resident, does not have too much household equipment. So I got another mini tractor. As usual - homemade (you can see about my previous work in “M-K”...
