I need a thicker plate for my 51/2” post vise. Currently I have a ¼” piece. My friend found a ¾” piece that is 22x18. I want to make it round so I can roll it. I was just going to weld the ¼” on to the ¾” for a total of 1”. Would a 1” piece that is 18” dia be heavy enough so it will not move all around? Thanks Martin