This video is how Bill make's glass beads , please be advised there may be foul language used now and then
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https://www.youtube.com/watch?v=hLSTEtgKOQo
WE have a window in the wood stove room that out look's into the carrel were the horse's are at night , so I decided to pop the screen out and Bamm you have a drive threw window for the horse's
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https://www.youtube.com/watch?v=DjvZXRjW9QA