Machinist Vise: Complete Guide from CNCCookbook
Clean the Table and Tram the Machinist Vise. Before putting any machinist's vise on your machine table, be sure to clean the table of chips. You don't want to trap a chip between the machinist vise and table. If you have a TSlot table you're mounting the vise to, you'll probably want to tram the vise as well.