I teach and take metalsmithing workshops. Often these are not offered in fully equipped studios, and I need to supply substantial vise that will clamp down to a table. I have found the commercial jewelry clamp on vises woefully inadequate. Watch the sales at Harbor Freight or an eye out at yard sales. $30-$40 new or $5 to $15 yard sale find, a scrap of plywood, a couple of C clamps and bolts will make you a strong useful tool you can use for years. You might find one to "steal" in your backyard toolshed/ workshop. I admit to borrowing ours and then just drywall screwing it to workbench when it comes home. Check out these photos for details and send me a pic of yours if you make one!
Metal artist and workshop instructor, April Bower shares information on workshops and retreats, Gallery News, new works of art she's created and news of other artists.