Wiped down bare surfaces with acetone and Scotchbright. Sanded prior application to knock down orange peel and 'pimpling' areas with 320/400 grit on 5" cordless orbital sander. Wiped down with tack cloth. Taped holes to reduce flow through. Wore organic solvent filter. Stirred and strained 6 oz Eastwood OptiFlow epoxy base, added 6 oz catalyst. Twelve oz was just sufficient quantity to apply to entire fuselage, the leading edge and control surfaces of the tail. Started interior priming at high wear (hand and finger prints) surfaces at cockpit bulkhead.