After completing the wooden structure of the spine, trestles were build to support the fuselage plug for further production. So now we can work on a comfortable height. After an obligatory orange coat of paint it was time to add a bit  of strength and rigidity to the spine. Two layers of fiberglass were added as some reinforcement.  First we fiberglassed the top and the sides. And after curing for a couple of days we then fiberglassed the bottom:

On top of the fiberglass a layer of peelply was added to aid in the next bonding step.