Hi Ed and welcome. If it was something especially large then it may have been about building a sled instead which can span a greater distance but has far less flexibility. You can put either word into our Community Search engine towards the top of the page. Any thread with that word in it will come up.
If you can remember who started the thread or who posted in the thread then you can click on that person's user name and click on their Personal Profile and you'll go to that page. Once there look for a menu bar with Statistics on it and click on it. You'll see a choice to search every post that person has made or every thread that they started which is always a much shorter list.
Someone I consider a master woodworker once told me that a master woodworker is not someone who never makes mistakes. He is someone who is able to cover them up so that no one can tell.