A few weeks ago I bought a both a belt- and an orbital-sander, both with dust-collecting devices, both semi-professional versions.
Sanding the wings sheeting and leading edges was sooo much easier than by hand.
It's the kind of stuff, once you bought it, you can't figure how you did before without it.

A friend of mine, years ago, built a horizontal, 48" long, belt sander, for leading edge shaping, I was offered it for a few bucks but I'm hesitant since there is no dust collector, and since I work in an 'office' environment, the dust collector is an absolute must.
Guess I will have to build the DC by myself, shaping LE would be done in a fingersnap...

Well, a little off topic, nuff said

Marcus