These aircraft are the coolest that I ever worked on. They were made almost totally of composite materials. The fuselage was graphite and the fairings, leading edges and control surfaces were Kevlar. There were metal (titanium and aluminum) parts but mostly it was composite. While working on these I used to joking say I was working on a plastic airplane. It was put together like a small plastic kit airplane in that it had several large pieces (sides, top, and bottom) that were glued together to make the fuselage. All the composite pieces were glued together and the metal was bolted or riveted on. But that is all 14 years down the road from where this narrative is at this point.
H/T to Chris Hanisko for putting the picture on the intratubes where I could find it. I googled "Lear Fan" and this was one of the hits that came up.