You dont buy a tool unless you plan to use it. Or unless you are like me and simply buy tools because you never know when you'll need it. I have tools I have only used once in 10 or 20 years even. But the moment I get rid of the tool...I'll need it.
For me a Hand Squeeze Riveter was a no brainer. For some people its an unjustified expense. And its not cheap. So I set to finding the easiest and cheapest way for everyone to save tighten their figures. I tried several methods. Made different tools and it doesnt get any easier/cheaper than this.
Tools: 1 small Ball Bearing. A standard BB will do.
A small flat piece of steel. A butter knife/table knife/steak knife
Butter/grease/honey or something similar.
I medium set of Pliers
Place you knife of choice or any other thin flat piece of metal you have in the vise. I used my measuring spoon. Place the limb you wish to rivet, with the head of the rivet upon the flat surface of your knife blade. The ball bearing should be on top. The vise is used to hold the steel to free up your hands and make it less awkward. More talented people might be able to get away without one. I have a vise. So I use it.
Test Tightness. Repeat if necessary. Wipe of the butter and play. :-)