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Making new bump cowls for an old airplane

The Stinson Trimotor Cowling Project

Current State of the project.  -  A history of the project.
March 21
welded cowl

tacked cowl
This project has been an education.

aligned and clamped to buck
Aligned and clamped to buck
edge on view

rotating flexible straight edge to mark cut lines.
Flexible radial straight edge to mark cut lines.

Bumps are stretched out and rolled smooth

Each bubble was stretched out and planished smooth on the wheel, then annealed bumped out planished smooth,  . . . 5 times to get them to size.