In sheet metal work, a joint between sheets of metal wherein the edges of the sheets are crimped together and folded flat. Found on http://www.encyclo.co.uk/local/20933
In sheet metal work, a joint between sheets of metal wherein the edges of the sheets are crimped together and folded flat. Found on http://www.encyclo.co.uk/local/21074
In sheet metal work, a joint between sheets of metal wherein the edges of the sheets are crimped together and folded flat. 
In sheet metal work, a joint between sheets of metal wherein the edges of the sheets are crimped together and folded flat.