How to peen the humble unassuming rivet. It's a little more complicated than bashing it with a hammer a bunch, but not much.
Step 1: Supplies
in this picture i have....
-a 5 pound anvil
-a metal punch
-a small ball peen hammer
-2 pieces of metal to rivet together
-and a roofing nail.
obviously you don't need to use these tools specifically. a drill works as good as a punch, and the anvil can be replaced with any anvil like object. I regularly use a big ass block of steel i found at the side of the road, a chunk of railroad track, a 15pound lead sinker, or in a pinch I've even used a brick. just for some ideas
as for the nail, i usually use 6d nails from the hardware store if i'm riveting metal to metal and use the roofing nails when i;m attaching leather to metal.
Step 2: Preparing to rivet
remember those 2 pieces of metal? well now is the time to punch/drill a hole in both of them. since this is practice it doesn't matter where, as long as there is 1 hole in each piece.
for a 6d nail or a standard roofing nail you'll need to make 1/8" holes. if your using a roofing nail 1/8 is a really snug fit, but you can shove it in there.
Once your nail is through both pieces of metal you'll need to cut off the extra, but how much exactly is that?
well thats easy. you'll want to have about 1/2 the width of the nail sticking out of the hole. just lok at the pictures they show it better than i can explain it.