Definition
A small hand saw with a thin, narrow blade held under tension in a U-shaped steel frame, used to cut curves, irregular shapes, and intricate patterns in thin wood, plastic, or soft sheet material. The blade can be rotated within the frame so the cut can be guided in any direction, and the blade is removable so it can be threaded through a drilled starter hole to make internal cutouts.
Plain English
A small hand saw with a thin blade stretched across a U-shaped frame. The thin blade lets you cut curves and shapes that a regular straight saw can't manage.
Context Anchor
Seen in aircraft maintenance and shop work when a small, controlled cut is needed during fabrication or repair.
Derivation
From the verb 'to cope' in carpentry, meaning to shape the end of one piece so it fits the contour of another. The saw was named for this task — shaping joints to match curved surfaces.
Why Pilots Care
Allows accurate fitting of structural parts during repairs or custom fabrication without damaging surrounding material.
Intuition Check
“Coping” here does not mean handling stress. It refers to carefully cutting a shape so material fits or clears properly.
Example Sentence 1
He used a coping saw to cut the curved plywood gusset for the wing rib.
Example Sentence 2
During fuselage assembly the builder used a coping saw to cut a clean curve around the stringer intersection.