3/26/2023 0 Comments Gpass floatToday most of the glass floats remaining in the ocean are stuck in a circular pattern of ocean currents in the North Pacific. Small glass float located on the beach in Japan Sometimes knife markings where the wooden molds were carved are also visible on the surface of the glass. Seams on the outside of floats are a result of this process. Glass floats were blown into a mold to more easily achieve a uniform size and shape. These marks sometimes included kanji symbols.Ī later manufacturing method used wooden molds to speed up the float-making process. However, no pontil (or punty) was used in the process of blowing glass floats.) While floats were still hot and soft, marks were often embossed on or near the sealing button to identify the float for trademark. ![]() (This sealing button is sometimes mistakenly identified as a pontil mark. After being blown, floats were removed from the blowpipe and sealed with a 'button' of melted glass before being placed in a cooling oven. Recycled glass, especially old sake bottles in Japan, was typically used and air bubbles/imperfections in the glass are a result of the rapid recycling process. ![]() The earliest floats, including most Japanese glass fishing floats, were handmade by a glassblower. Glass floats have since been replaced by aluminum, plastic, or Styrofoam. In Japanese, the floats are variably known as ukidama ( 浮き玉, buoy balls) or bindama ( ビン玉, glass balls). Today, most of the remaining glass floats originated in Japan because it had a large deep sea fishing industry which made extensive use of the floats some made by Taiwan, Korea and China. Japan started using the glass floats as early as 1910. By the 1940s, glass had replaced wood or cork throughout much of Europe, Russia, North America, and Japan. The earliest evidence of glass floats being used by fishermen comes from Norway in 1844 where glass floats were on gill nets in the great cod fisheries in Lofoten. The registry shows that this was a new type of production. The earliest mention of these "modern" glass fishing floats is in the production registry for Hadelands Glassverk in 1842. The glass float was developed through cooperation with one of the owners of the Hadeland Glassverk in Norway, Chr. Christopher Faye, a Norwegian merchant from Bergen, is credited with their invention. Many of them can still be found in local boathouses. Norway, around 1840, was the first country to produce and use glass fishing floats. ![]() Small glass float from southern tip of Taiwan
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