The lock seam which has an additional fold and is often used for corner seams is a type of grooved seam.
Tools for making a grooved joint seam in sheet metal.
The grooved seam joint fig.
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Crescent wiss 24 folding tool wf24.
It consists of two folded edges that are locked together with a hand groover fig.
Abn sheet metal hand seamer 3 inch straight jaw manual metal bender tool sheet metal bending pliers flattening tool.
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Making a grooved seam mark out half the width of the seamon each end of the piece to be joined.
Manual sheet metal grooving tool don t forget to subscribe.
Manual grooved seams are pounded with a mallet to finish with no soldering required.
Use a boxwoodor rawhide malletto beat it over a scrap piece of metal of the same thickness on a bench blockor similar surface.
Fold initially to an acute angle using folding barsand hatchet stakeor bench folder.
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2 57 is one of the most widely used methods for joining light and medium gauge sheet metal.