Pic one is more design stuff. I’ve been using french curves to join co-ordinates on paper. Another way to get a smooth transition is to bend a long ruler against a couple of clamps as you see in pic 1. Works a treat.

Pic 2 has the fuselage NACA 67xx series blended to the spar and the rear Eppler. This shape looks final. This was all I needed to note where the strakes will end up. I transferred the shape to the side with some carbon paper. This is only to see where I need to put the EZ epoxy.

We are still working on the other baffle locations. BL 23, BL 45. BL 55.5 is fixed as its at the wing.

Pic 3 shows the EZ stuff in place and peel plied. I now have two coats over the spar and fuse sides with a nice peel ply finish.

Spline technique

New airfoil

EZ epoxy prep