Say what? Why prime an aircraft that is going to be covered in foil?
Yes, I can’t help it: I have to try my own ideas again. The Spin is going to be covered in transparent white and red, so the interior is going to be visible. And I’m not too happy with the colour contrasts of the different parts made from carbon fibre and wood, the scorch marks left from the laser cutting are hard to completely remove, too.
And that’s why I tasked myself with priming the construction before applying the covering with film.
After the details are finished I can finally focus on the covering. Some model builders seem to regard covering as an irksome work and necesarry evil, but I actually enjoy it. To me it’s like a metamorphosis: the bare framing of the aicraft, as pretty as it is, equals a caterpillar, which is yet to become a butterfly.
Nonetheless it’s a lot of work all the more if one wants to get a creases-free result. In the process, I didn’t manage to take a lot of pictures, but I’d like to give an example and point out some crucial points.
Finishing the vertical stabilizer only leaves the tailplane’s assembly. Here, three important objectives have to be met: the horizontal stabilizer must be in parallel to the long axis, so must the vertical stabilizer, and the vertical stabilizer has to be at right angles to the horizontal stabilizer.
The most important contribution to the right angles is provided by clean, perpendicular cuts, which I can achieve easily thanks to my table saw. In order to further stabilize this orientation, I’ve constructed two guides from balsa wood and sanded them into a streamlined shape.
Horizontal stabilizer and elevator reinforced.Even while building the horizontal stabilizer I realized I made a design error: the thin leading and trailing struts have been glued to the tips as butt joints, lacking adhesion area and thus stability. I rectify this by reinforcing the corners with small wedges of balsa wood. And this enlightment directly flows into the vertical stabilizer.