How Catgut Strings are Made
Catgut strings are prepared by cleaning the intestines of fat and other undesirable additions. They do this by soaking the guts in water, then using a knife to scrape off the various things, such as fat, attached to the intestines. From there, the intestines are soaked in an alkaline substance and smoothed out. The surviving microbes on the catgut are then killed via sulfuric fumes. From there, the intestines are ready to be stretched/wound/etc. into appropriately sized strings.
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