I may have used the addon direct from the contrib SVN (as opposed to what is installed), I can’t actually recall.
Now, I am sure you know most of this, but I am just going to share what I did. I started by setting the scene to use the units I wanted, in my case imperial.
I then create a cube and set its dimensions to my stock. In my case I was going to start with 1"x4" plank, so I key it in to 0.75" x 3.5" and then set it to some length (which I didn’t much care about yet). I duplicate this as I go and “cut” my pieces as I would plan to with my saw. So when I start shaping things (say I cut a corner off at 45 degrees) I don’t much worry about what the dimensions are because the addon can be used to show me later.
Here’s my jig after I drew it in Blender, note the measure tool on the right. The grey piece is actually what the jig is used to produce. Material colours are assigned just for clarity on what the pieces are. Assembly has to be kept in my head (as there is no assembly and mating as in Solidworks).
<Post #1, limited to 3 images per post so more coming>