20050212-allegro-01-innertecure:
Make the inner LE piece out of 3/32" thick balsa cut to the thickness of the flat end of the ribs. Adhere with Titebond and use scraps of masking tape until cured. I did not pre-sand the bottom of the LE before adhering. Drela recommends this, but I find that I can do a serviceable job w/o it.
20050212-allegro-01-innertecure:
Make the inner LE piece out of 3/32" thick balsa cut to the thickness of the flat end of the ribs. Adhere with Titebond and use scraps of masking tape until cured. I did not pre-sand the bottom of the LE before adhering. Drela recommends this, but I find that I can do a serviceable job w/o it.