If your metal table is wobbly, there are a few things you can do to stabilize it. First, check to see if the legs are all the same length. If they're not, you can try trimming them down so they're even. You can also try adding felt pads or rubber feet to the bottom of the legs to help grip the surface and prevent slipping. If your table is still wobbly after these adjustments, you may need to add additional support in the form of braces or crossbars underneath.