RE: Black Magic VF3 E build thread!
ok let's roll......
Capping the cores
First, trim the LEs of the wings, stabs and fin down fairly close to the core. Sand this flush using either a block sander or long, stiff bar sander. be careful to keep it all straight and true, and don't sand too much.
Cut out a piece of capping for each core. The Wing and Fin LEs are made from 1/2" contest balsa, and the stabs are capped with 3/8" contest balsa. Cut these a little oversized so you can trim them back.
Glue the LE caps in place with polyurethane glue. All you need is a thin film, just enough to be damp. Anything more is dead weight. Spread it on with a finger and then go over it with a paper towel. if it's just damp, it's perfect.
Tape the LEs in place with masking tape in numerous locations. Pull the tape snug so there is no gap.
Let the cores sit for 6-8 hours before trimming.
-M