Thrustline Arapahoe C, Part 10, Fin Position Marking

After the tube was shot and the filler/primer sanded, it was marked for three fins and three long strakes.
The difference on this design is the strakes go down the tube length between the three fin positions.

Here the fin root glue positions were sanded down using a block. Sand to a estimated width of the fillet. Pencil lines were then redrawn.

The Estes Monarch kit fin marking guide fit well.
To get six positions from the three fin marking guide, the paper guide was folded in half between the printed two lines.








The strakes were glued on first.
I used an aluminum angle to check and make sure they were straight.