Mail Arrival Flag

I originally printed a “mail arrived” flag by PERGO which you can find here: https://www.thingiverse.com/thing:2069215
It didn’t work well on my mailbox because my door opens 180 degrees causing the flag to go over center where it was hard to see from my house. So, I made a different design; however, it was definitely inspired by PERGO without who’s design I would not have come up with this idea on my own. Full credit to him.
My arrival flag uses hardware recycled from eSUN filament spools but you can use any similar 6mm bolts and nuts. You’ll need four or five bolts and a few nuts for the pivot axles as well as the ballast weights. You can ballast with fewer bolts and more nuts, or more bolts without nuts; suit yourself.
It helps to use self-locking nuts with nylon inserts on the pivot bolts along with some jam nuts so you can snug the bolts up to the mailbox sheet metal in order to make the bolts rigid without squeezing the plastic parts. In other words, install the pivot b