blue cobra wrote:>How do you slice ribs?
The easiest way is to create a template of the desired shape from either thin balsa (about 1/16 inch) or matboard. The edge should be sanded to ensure a smooth curve, because the slightest kink will be transferred to all ribs. Once the shape is right, glue a thin wire (about .020 inch) along the edge. When this is done, sand the edge of the profile with very fine sandpaper to remove any glue lumps. Then use this profile to cut ribs carefully with half a double-edge razor blade, or an exacto knife with a pointed blade.
> Should ribs be low or high density?
Doesn't matter much. Make them from the same wood as your spars.
>Approximately what simplex should the ribs be? And the ribs on the tail?
The exact profile is not very critical for SO purposes. But common would be a thickness of 4-6% compared to the chord, with a high point about 40% of the way back. An ordinary French curve can be used to obtain a reasonable shape.
How do you roll tissue tubes?
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