In my Education Encore Torch Fire Class tomorrow, we are going to begin to work with curved and folded pieces. In addition we will be working with Micro Nuts and Bolts.
There are several types of commercially manufactured micro hardware available in several metals: brass, stainless steel and oxidized metals
How to set
Mark you hole.
Drill or punch an appropriately sized hole in each piece of metal, insert the hardware, and tighten the nuts and screws or bolts.
Use flush cutter to cut off the excess of the screw.
Apply a little glue/resin to cement in place.
Beadaholique has a short little video on how to do it