Hangar 9 Alpha Trainer Assembly Manual page 16

Section 6: Installing the Horizontal and
Step 4
With the horizontal stabilizer properly aligned, use a felt-tipped
pen or pencil to carefully mark the bottom of the stabilizer where
it meets the fuselage.
Step 5
Remove the stabilizer. Using a sharp hobby knife, carefully
remove the covering from the center of the stabilizer, cutting 1/8"
inside the lines you marked in the previous step. Use only enough
pressure to cut the covering and not the wood underneath, as doing
so will severely weaken the structure of the horizontal stabilizer.
Step 6
Before gluing the horizontal stabilizer in place, reposition the
stabilizer onto the stabilizer saddle. Use the lines drawn in Step 4
to reposition the stab correctly. Using a 90-degree square, make
sure the stabilizer is square to the fuselage as shown. Make any
adjustment needed by sanding the stabilizer saddle until the
proper alignment is achieved. Remove the horizontal stabilizer
from the fuselage.
16
Vertical Stabilizer
Step 7
Mix at least 1/ 2 ounce of 30-minute epoxy and coat the horizontal
stabilizer saddle and stabilizer center section.
Step 8
Lay the horizontal stabilizer onto the saddle, lining up the center
mark of the stabilizer with the rear of the saddle and the opening
for the vertical fin. Wipe away any excess epoxy with rubbing
alcohol and paper towels.
Step 9
Use masking tape to hold the stabilizer in place as the epoxy
cures. Allow the glue to cure before moving on to Step 10.
Continued