Estes EAC VIPER #0820, BT-55 Upscale, Part 5, Squaring Up The Fins

I had to go old school on this one - Oh, the horrors! 

Actual templates, tracing and cutting out the fins.

 

After cutting out the fins, they are stacked as evenly as possible. The edges aren't even or clean.

On the right is the same side of four stacked fins after sanding with 220 grit on a block.

On the left, more follow-up sanding with 400 grit.

A side view. When stack sanding fins, try to get the sides as square as you can at 90 degrees.

The smaller forward fins taper to a point at the top.

After stacking and sanding, the thin tips aren't even.

These were cut even with one pass over all four fins at the same time.

All the eight fins - 

The first run of the kit instructions said to round the leading, outside and trailing edges. The root edge always stays square.

The second run instructions said to round the leading and trailing edges only.

I'll be rounding the leading, outside and trailing edges.