Laying out the fins on a sheet of basswood.
The Arduino in a birch plywood rail. There will be a birch plywood bulkhead glued to either end of the rail.
Top view of the Arduino, showing the accelerometer and the air pressure/air temperature sensor.
Cutting the fins out with an X-Acto knife. The sheet of plywood under the basswood stock is to keep the knife from damaging my table.
The completed fins, two BT-80 body tubes and a BT-80 size nose cone.
Test fitting the Arduino and the plywood rail inside the BT-80 body tube.
Using the tube coupler as a template for drawing the plywood bulkheads that will be attached to either end of the rail.
Marking the lower body tube for the fins.
I taped the body tube coupler to the aft end of the lower body tube to space it properly for the fins, then taped the fins to the body tube as I glued the fins to the body tube.
The fins are glued in place, the coupler is glued to the lower body tube *ONLY*, the upper body tube is slid in place over the coupler and the nose cone is temporarily slid into the upper body tube. It's a *BIG* rocket!
Testing rocket launcher integration.