Estes EAC Firecat #0821, Build, Part 5, Cutting Out The Fins

The fins are cut out from 3/32" balsa.

Notice the line down from the leading edge through the left of the center area. This cut line only applies to two of the four fins.

Cut out four fins, one tube standoff,

and one long raceway. 

As mentioned - 

Only two of the fins have the wing tip cut off.

Here I slid the full fin pattern back to lightly notch the cut line.

Slide the pattern forward and notch the rear of the fin.

Use a straightedge set on the knife mark notches 

and cut off the wing tip.