This is a short sheet which means the sheet was not wide enough to properly seam the can. A seam from another beer can was inserted so the sheet could be rolled to the correct diameter. Below is the finished can after the top and bottom were applied.
We turned this drinking cup into a flat top beer can. The cup had a handle attached to the seam and a rolled lip. To convert the mug back into a beer can we had to unroll the lip, remove the handle/solder and finish it off with a nicely matched donor lid.