Estes Low Boom SST #7289 Build, Part 5, Jet Engines Assembly

Before adding the stringers, the assembly top and bottom were sanded smooth. Use a sanding block here with 220 grit sandpaper.

The small stringer notches are cut square by the laser. These have to be trimmed at an angle for the stringer gluing.
TIP: Use a single edge razor blade to do two cuts at the same time. This will keep the cut angles consistent.



Before cutting all the way down, lightly score the lines with a  to check the width and angle of the cuts.

With the corner angles cut, the stringers are glued in place. Note the left end of the stringer at the halfway point. It is cut at an angle so the the right and left tip centers will match.

This reminds me of the Guillow's planes I made as a teen. There was lots of 1/16" thick stringers and fitting involved.



Here's the stringers glued in place on the front and rear of one engine.

Some inside glue dots were added to the stringer joints. Excess glue was picked up with a Q-tip.