Catgut down to the desired diameter using a centerless grinder. After drying and polishing, workers bleach and disinfect the strings using sulfur dioxide, dye them if necessary, and sort them into sizes. Catgut sutures are normally treated with a chromium salt solution to resist body enzymes, to slow the absorption process, and are called catgut chromic sutures—whereas untreated catgut sutures are called catgut plain sutures. Catgut Catgut is a type of cord that is prepared from the natural fibre found in the walls of animal intestines. Catgut makers usually use sheep or goat intestines, but occasionally use the intestines of cattle,
Kingri (string instrument) inserted into the fingerboard with three pegs. The strings on the bow are made by using three tufts of horse hair or Goongaru. The strings on the instrument were originally made of animal gut, but modern day Indian gypsies typically use low quality steel strings instead, resulting in more vibrato and lending the instrument a sound similar to the violin. Sri Lankan composer Dinesh Subasinghe used the kingri on the album Rawan Nada as well as for performing folk music. In 2007, Subasinghe made some modifications to the instrument and discovered it to be another close version of the Ravanstron