PAINTING FUSELAGES OR TRUSS ASSY’S BEFORE COVER 1 / 04 When painting a fuselage or truss assy which is to be covered with fabric use the following mixing procedure for Air Tech CHSM polyurethane color. Mix the color as per normal instructions; 3 parts color; 1 part CHSM 5071 catalyst and up to Ѕ part Air Tech reducer either RT 4070 Rev. 4 or RT 4085 Rev. 4. To each quart of mixed color add 2-4 ounces of ACC 1030 which is the accelerator for the fabric primer PFU 1030-F. Allow the assy to sit and cure for about a week in order to develop enough chemical resistance to resist the solvents in the adhesive.
Also do not apply thick coats of adhesive to the part only thin coats per the instructions.