Bad idea - The Blanik wing skin alloy is the same soviet era material
used on early MIG's. Not even close to 2024, probably stronger than
7075-T6, and anodized, not clad.

Assuming you can identify the major alloying elements of the factory
skins, how will you determine the aging tempering process used, and
show compliance/conformance with the design material properties as
required by the FAR's? Do you think the factory will give you all the
design allowables for this material? Or perhaps you will develop your
own per Mil-Hnbk-5?

See if you can get a piece from a scrapped ship, I know someone that
has several.

Aerodyne