New Way Mars Snooper II, Build, Part 10, Positioning The Lower Shroud

The centering ring was a little tight. 

TIP: To get a smoother shroud edge with no bulge, sand a slight angle on the ring edge to fit the angle of the shroud.

On the right, I used my flat sanding block to press the ring into the shroud, no glue yet.

The ring and shroud are slid up over the end of the BT-50 until the small end of the shroud is even with the tube end.

   

Mark the ring position with a pencil.

Remove from the tube and pull out the centering ring.

Slide the ring up to the pencil lines and glue onto the tube.

After the ring glue dries, Apply glue lightly (seen on the right) and slide the shroud up and onto the glue and ring.

TIP: For easier positioning of the vanes,

Extend the alignment lines onto the centering ring. You can also do this on the bottom of the BT-50 tube edge.

Why? When the vanes are glued on, the alignment lines are covered by their root edge. You might end up gluing the vanes at a slight angle.