http://www.instructables.com/id/Magnetic-Rubber-Jaws-for-a-Vise/?ALLSTEPS

[myxpykalix]

This is a good idea for those who need to insert material so as no to mar the surface but i just thought of a easier thing to do. Instead of using those big fat erasers as in this instructable just use some of those flat refrigerator magnets that we all have stuck on our frig's. Or i think you could buy some of that material at a craft store.
http://www.instructables.com/id/Magnetic-Rubber-Jaws-for-a-Vise/?ALLSTEPS