The other method of window glass making is so called broad sheet. It is made by blowing molten glass into an elongated balloon shape with a blowpipe. Then, while the glass is still hot, the ends are cut off and the resulting cylinder is split with shears and flattened on an iron plate. The quality of broad sheet glass is not good, with many imperfections and mostly translucent. Due to the relatively small sizes blown, broad sheet was typically made into leadlights. The centerpiece was used for decoration in places where looking through the glass wasn't vital. If the piece was large, it was possible to see bubble tracks and strain lines. Broad sheet glass was first made in the UK in Sussex in 1226 CE. This glass was of poor quality and fairly opaque. Manufacture slowly decreased and ceased by the early 16th Century. French glass-makers and others were making broad sheet glass earlier than this. The other similar method of hand-blown window glass is Cylinder blown sheet. It is created with a similar process to broad sheet, but larger cylinders are produced by swinging the cylinder in a trench. The glass is then allowed to cool before the cylinder is cut. The glass is then re-heated and flattened. The result is much larger panes and improved surface quality over broad sheet.