To-do list for final CAD of Empennage:

Vstab:

• 3 Ribs along Vstab span
• shear web for vstab
• kevlar hinge for rudder
• rudder cut for elevator clearance
• wire passthrough for servos
• servo emplacement for vstab

HStab:

• mold skins
• spars and shear web
• servo emplacement
• closeout spars for elevator
• 2 servos for redundancy
• ribs

For mass estimate:

skins : 2 * 1.5 * number of layers * area