if you are looking for a vise to use on your drill press, they are easy to make a simple one/
Get a piece of scrap 2x4. cut a v into it approximately in the middle. Attach a hinge on one end and add a piece of scrap wood (used a piece of 1x4 on mine). Blank goes into the v and the smaller piece of scrap holds it in place while you drill.
Again if you are using a drill press, you have a pen vise. Simply make a piece of scrap wood to fit in the drill press. then use it to press the parts in.
Casting mold. There are several articles in the library/casting section that show how to make simple molds from the white plastic cutting boards, PVC piping, and even Aluminum foil.