On the right, the laser cut edges are squared up with a sanding block.
Laser cutting makes a wedge shaped cut, wider on one side.
The picture shows the edge sanded with the block perpendicular to the flat face of the fin. A little bit of sanding shows the angled laser cut. Square these edges up so the fins will glue on straight.
I'm assembling two of these models.
In two identical kits, the balsa density can differ. I mark the root edges so I don't mix them up between the two builds.
Some 400 grit is wrapped around a D engine casing to sand the rounded leading edge and keep the curve even.
The card stock details have round holes in them.
With a #11 blade, cut the hold down tab to remove the center pieces.
To smooth out the circles and remove the remaining tab, a small round diamond file was used.
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