Welcome to Thunder’s Place GoinBig. Let me introduce you to the Search Button:
It’s found at the top of every page. If you click the button you can do a simple search. If you did that and used the search term “edging” you’d get over 980 threads that contain that word in the posts. Way too many to look through. However, If you select the “Advanced Search” link in the drop-down window then you’ll go to the full search page where you can elect to search for “edging” in thread “titles only.” This will net you a comfortable 75 or so threads to look at of which many will answer your question.
I know it’s easier just to ask questions, but you have to realize how many people are on this site and how long it’s been around. There are very few questions like yours that have not already been asked.