BMS School Rocket, Build, Part 6, Gluing In The Engine Mount & Filling The Nose Cone

I use a dowel set a ring of wood glue inside the main airframe tube.

A dowel is set next to the mount with the end just below the upper centering ring. The bottom of the mount tube will extend 1/4"  below the end of the main airframe tube. The dowel is marked at the 1/4" extension.

A ring of glue is placed around the top of the dowel. Using the pencil mark as a depth gauge, roll a ring of glue inside the tube. 

Slide the mount into place, up to the 1/4" mark.

I like to center the engine hook between two fins.

Right now there is only glue at the upper centering ring.

There isn't much room to apply and smooth a glue fillet around the rear ring. Apply some glue and smooth the fillet with a Q-tip formed into a "tip" by rolling it between your fingers. 

The shoulder lip on the nose cone wasn't as square as I would like.

Notice the CWF filler is painted just over the edge of the shoulder.

Push the nose one all the way into the BT-50 tube and turn.

Turn and remove the nose cone.

What you are left with is a raised filler bead right above the balsa shoulder.

Let dry and sand with 400 grit on a block.

The shoulder lip will end up sharper and a better fit against the end of the body tube.