Forming (seaming, hemming, ribbing (outwards, inwards) the edges of your parts into different shapes

Smooth, polished, rounded cavities of tools

Curling by die-set or machine

3 – 4 – 5 layer of thickness lockseaming

Different shapes of seaming, hemming

Different ways to join sheet metal

Threading processes based on previously drawn drafts without any loss of material and different sheet metal screw forms