RE: Palmer 1/4 Scale BD-5 and Misc. Info
Yes, the plans are still available from Palmer for $64. As Joe mentioned they consist of 4 hand drawn sheets, so I don't think there is a CAD plan. I bought mine about a year and a half ago. One thing about the plans though, since they are hand drawn, some of the pieces are not completely symetrical, ie if you fold say a cut out of a former and fold it in half, the edges don't match. As someone mentioned earlier, Palmer is not known for actually building his stuff, like say Platt or Ziroli, I wouldn't be surprized if no has actually built a plane from these plans.
Where am I going with this? Well, while I've never had anything lazer cut, I do know several people who have, one even competes in Top Gun from time to time. The consensus seems to be that it is more trouble than it is worth. Even with the most accurate laser cutter there is the question of which "part" of the line to use, ie, inside, outside or middle. Then unlike a big manufacturer, the plan has probably not gone through beta testing where the parts are test fit to see how they go together as a whole. Finally, kit cutters tend to make inevitable mistakes interpeting the plan. Though not really a problem with a responsible cutter, since they'll have the electronic version and will recut for you, it is time consuming. Chances are better with something like a Gentle Lady glider, or some trainer, but the BD-5 is fairly complex and chances are that the cutter will become your best friend.