RE: The New Pentathlon Evolution
I am finally under way with the Evo build, which is the most ambitious project for me thus far.
This is my first pattern ship build and first foam core wing build, so I will have a lot of "dumb" questions as I go along. Already I have had some excellent advice from several pattern guys and have read all the tutorials and build threads I could find.
Mainly I am following the well-known Terry Brox tutorial (superb!) and am substituting some of the materials and methods as I go along when considered logic seems to indicate. For instance, Ambroid cement for gluing the balsa sheets together is no longer available, and after weighing the other options (no glue, CA, etc...) I decided to follow the recommendation of Clay at The Balsa Store and use Elmer's White glue. Also, vacuum bagging is more suitable to my situation (living in a condo) so I will go that route. I got the simple vac bag system from ACP.
I took my time truing the edges of the sheets with the edge sander I made with an aluminum door threshold piece from Home Depot, using some 3M Super 77 to attach 150-grit sandpaper. The panels came out nice and flat with minimal sanding, and once trimmed weigh an average of about 41 grams, which Matt K advises me is pretty good.
Next, prepping the cores... a lot of critical stuff to do there!