Decided to start working on my booby's. I have two sets of cores cut out of blue foam. I had to slightly adjust the plans to fit within the restrictions of the cnc machine, ie the towers only go so far in each direction, but its pretty close to the original plans i had wanted. It actually worked in the favor of cg, as i have more room now to add ballast. Before the cg was in front of the center section.
I am using this booby project as my first fully vacuum bagged fiberglass plane. It will be 5 different sections that i will glue together later with epoxy and fiberglass strips. There are several reasons to make them in 5 sections. One i need to get the wire holes in each section and run the wires and you don't want to do this before bagging. Secondly the mylars will not go over the compound curves where the sections meet. I have two full sets so i can make mistakes on the first one and do better on the second. To begin with i am going to vacuum bag the center section by itself and see how it works. If i am happy with how it turns out i will try doing 2 or more sections at a time to speed up the process.
I will be using 3oz fiberglass on this first one. It will have a 1-2 inch strip of 6oz glass on the leading edges for some landing protection. A couple strips of carbon tow for stiffness around cg, and possibly some kevlar for live hinges, but still working on that, i may just do goop hinges.
For color i got some chiffon cloth in black and red. This will be directly underneath the fiberglass.
So the layers in the vacuum bag will be:
Mylar, 3oz fiberglass, chiffon red cloth reinforcements (carbon tow/kevlar), Foam core, reinforcements, chiffon black, fiberglass, mylar
The mylar is what gives the fiberglass the "glass" finish.
The other ways you can add color is by painting the mylars, dying the epoxy, painting the wings when done, using various translucent paper products under the fiberglass like rice paper and tracing paper, and there are some companies that do full color prints directly to fiberglass. Using chiffon seemed like a pretty easy way to get a nice color.
Im just waiting on my chiffon fabric to get the center section going.