Brief Description: Fabricating 063 alum. firewall stiffener for andai
...Filed edges of 6X6.5" .063 stiffener for Andair filter. Drilled 6 rivet holes in cross braces behind firewall for flush pop rivets. Used flycutter to drill 1.57" circle for filter protrusion through firewall. Used Locktite 567 on 2 brass 1/4NPT fittings, torques and marked with torque-seal.
