Assembly of spars and ribs

The method of construction of the vertical stabilizer is identical to the horizontal stabilizer :
Assembling the rear spar with its reinforcement and attachment points for the movable part

Deburring and flutting then assembly spars and ribs ( my son gave me a hand :-))

Here is the result

After assembling the skeleton of the vertical ruder with clecos, the holes are drilled with drill bit size # 30 .

Next step : deburring all parts + assembly of the skin.