Underneath the four fins is the remaining fin plastic
There is enough fin material for eight fins!- If you back them up end to end when doing the tracings.
TIP: You can score the narrow tip a bit deeper than the rest of the fin sides so the break line remains straight.
The fins edges are cleaned up with 220 grit on a sanding block.
The instructions suggest the leading edges can be sharp.
I rounded the leading edge and left the other sides square.
These small pieces can end up anywhere!
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