Sam -

I use MoI as a companion to my Robo R2 3D printer. I've designed fixtures for my shop as well as electronic enclosures, brackets, ect. The 3D object in your post would be easy to make.

http://moi3d.com/forum/index.php?webtag=MOI&msg=8944.1

I have no experience with laser cutting, but MoI works very well for 2D drawings. The finger joints should be quick to draw as you can adjust the screen grid to any size and then use "snap to grid" to draw the outlines. You can also make a re-usable "cutting object" in the shape of the finger joints and easily trim (cut) a rectangle in half and the pattern would match both pieces.

MoI has an "offset" function that should handle kerf/material thickness compensation - but not in an automated way. You would manually need to apply where needed.

Do you have some kind of semi-automated software now that makes the finger joints, or are they hand drawn?

Ed Ferguson