Monday, June 19, 2017
Estes Apollo Little Joe II Build, Part 16, Fin Support
Note the knife tip position set into the corners. I punched through all eight corners and then cut through the centers. This way the back of the knife worked like a "stop" and prevented me from cutting outside the square.
I cut a little inside the drawn square and then trimmed it to a friction fit of the stick.
After cutting one square I checked the fit of the fin position. All was good so the back edge was measured. Using the 3/16" square stick, the rear of the cut square was 9/32" from the back edge. The other three squares were marked and cut.
The inset shows some of the tube pushing in around the stick. I wanted a fairly tight fit around the support stick.
On the left is a pencil mark where the stick will be cut to glue to the engine mount tube. This will be cut slightly long and trimmed to fit.