Estes Semi-Scale Saturn V, Kit #K-39, Part 5, Cutting The Fin Slots

I used a new blade and my aluminum angle to cut the fin slots.

The masking tape wraps made it easier to see the start and stop points.

After the initial scoring the cuts were about half way through the tube walls.

I thought I was cutting on the lines. The slots ended up too wide. The fin root fit was too loose for me.

I got another BT-60 tube out of my spare parts.

This new tube needed seam filling with CWF then filler/primer.
 

Two of the four fin slots had a good fit around the clear fin material.

The other two slots were still too loose!

I had to get another length of tube, mark and cut the slots a third time!