Step 6: Misc stuff about rivets
-since you only need the first 3/8 or less of a nail usually, buy them in the shortest size you can. you'll get more per pound that way.
-the large head on a roofing nail acts like a built in washer. that makes them good for riveting metal onto fabric, leather or plastic.
-duplex nails can be used for pins & posts.
-for most uses a 6d nail will work fine. but carriage bolts are handy if you ever need a rivet bigger than 1/4 inch.
-for articulating rivets use a holes a little larger than the rivet, use a washer under the end you are peening, and peen it over a rivet spacer. A rivet spacer is just a piece of pallet banding or something similar with a slot cut into the end. it makes sure that your rivet is loose enough to allow the pieces to articulate.