I also built Van’s RV Training Project practice kit which is similar to many of the control surface used on Van’s aircraft. This was a much more involved project than the toolbox, but still only took me about 6 hours (hey, I’m getting a little faster :-).
I’m not getting to spend much time on preparing for the RV project since I’m trying to finish my kitchen remodel. I’m hoping to finish that in the next couple of months, take the SportAir Sheet Metal class in early October, get the shop ready in the fall and start the kit around the end of the year.