My relatively new hobby is to make small parts or decorations for my classical guitar and make jewels for my wife. So the jewelers saw became an essential tool. But I don't have a bench pin, so I needed one. Cheap to buy one, but I wanted to make my own.
There are many types and designs out in the wild:
This is my favorite one as inspiration:
Before the making the Christmas gift to my wife (3D Layered Veneer Earrings http://www.instructables.com/id/3D-L...neer-Earrings/ I realy needed a proper tool to achieve the goal.
I made an instructable about the full process:
2in1 bench pin with vise