In my quest to make hand-cut dovetails, I was made aware it to be a much easier process with the proper marking and setup tools.  With this knowledge in my brain, I was on a mission to make a marking knife and marking gauge.  In the particular build I tackle the marking knife.  Made from redwood burl on a lathe, I think it ended up looking great.  I suppose if you are in the mindset of wanting to try making hand cut dovetails for the first time, you could use a utility knife or similar.  But I wasn’t about to turn down making a tool out of some beautiful wood.  I had wished to get more footage of the actual build but 3 cameras dying simultaneously was not in my predictions.  Enjoy!