Thank you Jester, now it is clear what's the matter.

Assemblage of the wing.
The wall of the spar consists of 3 parts.

[ATTACH]2211507[/IMG]

[ATTACH]2211509[/IMG]

Split the front and rear edges at an angle.
For this, the ends of the edges are machined to the desired angle.

[ATTACH]2211511[/IMG]

[ATTACH]2211513[/IMG]

Back edges for endings.

[ATTACH]2211515[/IMG]

[ATTACH]2211517[/IMG]

Front edges behind the endings.

[ATTACH]2211519[/IMG]

[ATTACH]2211521[/IMG]

The edge for the endings consists of 3 parts.

[ATTACH]2211523[/IMG]

[ATTACH]2211525[/IMG]

[ATTACH]2211527[/IMG]

[ATTACH]2211529[/IMG]

[ATTACH]2211531[/IMG]

The main spar, pine rake 7X3 mm.

[ATTACH]2211533[/IMG]

[ATTACH]2211535[/IMG]

Before inserting the spar, the ribs are put on the side member wall.

[ATTACH]2211537[/IMG]

[ATTACH]2211539[/IMG]

[ATTACH]2211541[/IMG]

At first the central part of the wing is collected, so I did not put on the ribs for the endings.

[ATTACH]2211543[/IMG]

[ATTACH]2211545[/IMG]

Lower spar with allowance for processing.

[ATTACH]2211547[/IMG]

[ATTACH]2211549[/IMG]

Also on the bottom plane are glued three more slats 2,5X3, 5 mm.

[ATTACH]2211551[/IMG]

The upper spar is cut into the size of the root part of the wing.

[ATTACH]2211553[/IMG]

Also on the upper part of the wing are pasted four more slats 2,5X3, 5 mm.

[ATTACH]2211554[/IMG]

Waiting for the glue to dry up depresses...