Before you ask, let me say that today I learned that a "glut" is the proper name for a wooden wedge, used to split other wood. Mainly used for splitting rails. I came across it while searching for extra large steel wedges, of which there appear to be none. Apparently, when you need a wedge larger than you can buy, you need to make one out of wood. I found that mentioned in lots of places, but no one says how to do it. Is there a proper length to width ratio? How would you orient the grain? Cut with a saw, or an ax? I noticed recently while watching "Gone With The Wind" that Ashely Wilkes was splitting rails with a large wooden wedge. Now I know that was a glut. I need a couple to make my way through these huge pin oak rounds I'm working on. This question may tax the limit of hearth.com. Any advice appreciated.