The Guillow's kits are definitely good practice.....I use them as a learning tool in my engineering class ( 10-12th graders). Yes, they typically build up heavy, but with some care do build well and fly. Many of my students have never touched a model before! Got 22 newbies introduced to this "commission of aviation" that we do. Several want to do follow-up projects!

I do wish that they would diecut or lazer cut all of the little notches......this seems to be the biggest gripe I get from the kids.

Keep 'Em Flying!