I've lofted a Q1 using the original plans and my own experience building
one.

Making molds for a carbon fiber version.

It was very difficult to get specs on the aircraft from the drawings. The
moldless technique for the Q1 worked very well. However, there is a weight
penalty using fiberglass and hand layup. Using a vacuum transfer technique
uses up a lot less epoxy for the same wet-out. Also there is no requirement
for all that body filler on the outside since the finish is taken from the
molds.

-Ben
Q1, N124BB (in process, harder-slower-more-expensive than it looks)