Carved one corner with knife, then used a hand planer follwed up with 100 grit sandpaper. This was done in a little under 20 min. One of our local builders used this procedure is how I learned about it. Very little balsa dust. Man those fiberglass fuselages sure do spoil ya!!!!.

WARNING: if you try this method of removing balsa I will not be responable for any injury's by anyone trying this. just my way of doing it. Pete Coleman