The eyelets act as rivets to keep the shoulder straps attached.
How to make roman armor out of sheet metal.
This is the finished product i had to put light artificially so you could see the textures i painted it black this is a full metal leg armor made out of tin sheet metal and recycles cans you just need a minimum of tools and pretty much anyone can make this i will upload the template when i fix my scanner i used as a reference guts armor from berserk picking another design would be.
Just make sure you can get your head through between the two shoulder straps.
The two pieces are held together by duct tape and another 1 2 inch hole is drilled.
You will need quite a lot of metalworking tools including hammers drills and rivets.
But if you have access to a workshop and the raw materials you can make a replica of classic roman armor the lorica segmentata.
Make an authentic piece of roman armor.
The pieces of metal are then held together by another eyelet.