The 3/32" balsa is die cut.
The cuts were very shallow, not even through to the other side.
The only way to see the cut lines was to flex the sheet.
You kids don't know how good you have it today with laser cut parts.
Edges like this were typical of kit supplied fins before laser cutting was used.
Balsa edges were rough requiring more filling. Crushed ends often weakened the fins.
The two large wing pieces are glued and butted together.
I used yellow glue here, the epoxy bottles were just used as weight.
I tend to use a counter top for a flat surface. Wax paper is set down over the counter before the fins and weights are set into place.
These look to be the only fins that have rounded leading and trailing edges. The four fins weren't on the TV version of the Klingon Cruiser. They were added by Estes for additional stability.
Looking ahead, I'm not going to round the small edge nearest to the root edge. It looks like it should be left flat for a better gluing surface against the bulkhead pieces.
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