Semroc Cherokee D Build Part 2, Fin Edge Rounding

TIP: 
Don't sand off the brown laser burnt edges yet.
Use the dark burn as a gauge to tell if your rounded edges are even when sanding.

The top fin is before, the bottom fin shows the rounded edge.
This part of the sanding was done with 220 grit on a block.

Here's the fin after rounding the leading and trailing edges.
The remaining burnt brown balsa is sanded off after the initial rounding.
Use a piece of 400 grit over a finger to remove the remaining burnt edge and finalize the rounded sides.

TIP:
Check that your rounded edges are really round by looking down the fin from the root and outside edges.

BUILD TIME: Shaping fins = 20 minutes
TOTAL BUILD TIME so far = 30 minutes