Definition
A hand-operated cutting tool resembling heavy-duty scissors, used to cut thin sheet metal such as aluminum aircraft skin, sheet steel, and similar materials. Tin snips come in straight-cut, left-cut, and right-cut versions, with the curved-blade types designed to cut along curves without binding.
Plain English
A pair of strong metal scissors used to cut thin sheets of metal by hand.
Context Anchor
Seen in aircraft maintenance, especially when trimming or fitting thin metal pieces.
Derivation
‘Tin’ comes from the early use of these tools on tinplate (thin steel coated with tin). ‘Snip’ comes from the Low German ‘snippen,’ meaning to cut sharply with a quick stroke. The name has stuck even though the tool is now used on a wide range of sheet metals.
Why Pilots Care
Proper use prevents damage to aircraft skin during repairs and ensures clean edges for structural integrity.
Intuition Check
Tin snips are not limited to cutting tin. In aircraft work, the term usually means a hand tool for cutting thin sheet metal.
Example Sentence 1
The mechanic used tin snips to trim the aluminum patch to size before riveting it to the fuselage skin.
Example Sentence 2
Always wear gloves when operating tin snips to avoid cuts from the sharp metal edges.