Prepared port wing underside for application of Eastwood Optiflow epoxy primer. Initial preparation consisted of removing inspection covers, aileron pushrod fairing and pushrod. Inspected each rivet for protruding sharp nubs from the mandrel. Filed sharp ends flush. Wearing vinyl gloves, used a Scotchbrite pad occasionally wet with acetone and a clean acetylene soaked rag to scrub oxidized spots, tape adhesive, and surface oxidation. A second pass with Eastwood prep (xylene + acetone) spray and several clean shop rags to ready the area for primer. Masking tape across the reverse side of the leading edge of the wing to catch primer.
Mixed 10 oz (5+5) Eastwood Optiflow epoxy primer 1:1 with catalyst. Used half (5 oz) to coat the underside of the one wing.
The thin epoxy primer was rolled on to the vertical, leading edge up, wing. Initial rollout of the primer resulted in a lightly mottled finish, but subsequent application blends into adjoining sections. The primer seemed to adhere more readily with additional pot time. Eastwood's instructions indicate 20 minutes pot time as a maximum, but the 5 oz left in the mixing cup looked usable.
Cleanup is a simple matter of throwing out the used foam roller and tray liner.