MX-774 Kitbash Part 4 Fin Profiling

Here's technique loosely borrowed from guitar repairmen when they level frets on a fingerboard.

They'll mark over the tops of all the frets with a Sharpie pen before leveling them flat. When sanding over the fret tops, the remaining dark marker will show them the low spots on the fret. The low areas remain black.

Here I've marked the master (already fitted fin) with the Sharpie around the edges. Go light with the marker, you might need that fin later.

Four more fins were cut slightly oversize for this demo. All were pinned together making sure all the edges were overhanging the master, blackened fin.

Here's two edges sanded down to match the master template fin. You can see where the sanding was just starting to go into the blackened edges of the master.

I worked off a master fin this time because I didn't want to have to sand and match up three other fins to the angles of the body tube and tail cone.

That first master fin took too much time to get the correct fit.