Making jaw harp.

The video shows the process of making an ancient musical instrument from a ruler and a brass tube. For those who want to support the channel: Tools and materials that can be useful for this kind of work: - angle grinder =as_li_tl?ie=UTF8&camp=1789&creative=9325&creativeASIN=B00RVZ7DNO&linkCode=as2&tag=kirillrunz-20&linkId=138d6f63624090d5098c53ff17291f01 - Benchtop Band Saw =as_li_tl?ie=UTF8&camp=1789&creative=9325&creativeASIN=B077QMBTLP&linkCode=as2&tag=kirillrunz-20&linkId=f8f42f02dbe9e5d45c118953448c9dfa - inverter welding machine =as_li_tl?ie=UTF8&camp=1789&creative=9325&creativeASIN=B08D67XG46&linkCode=as2&tag=kirillrunz-20&linkId=c7fde6db45e8b3d1a1232d339e02b0d8 - Benchtop Drill Press =as_li_tl?ie=UTF8&camp=1789&creative=9325&creativeASIN=B08J43G8QV&linkCode=as2&tag=kirillrunz-20&linkId=04ca4789e284edd0ad0d377996489907 - Electronic Fixed-Base Router =as_li_tl?ie=UTF8&camp=1789&creative=9325&creativeASIN=B08DY55SLL&linkCode=as2&tag=kirillrunz-20&linkId=8225c0f1b287299f33aab143180a9ae3 - Variable Speed Bench Grinder =as_li_tl?ie=UTF8&camp=1789&creative=9325&creativeASIN=B01M9FVT0W&linkCode=as2&tag=kirillrunz-20&linkId=e80ffbe30517c63f52b1ba381f2b531e - Bench Belt and Disc Sander =as_li_tl?ie=UTF8&camp=1789&creative=9325&creativeASIN=B003J69ET0&linkCode=as2&tag=kirillrunz-20&linkId=9ca540eb8afc3a6f362944c4ccffb7d3 - Jig Saw =as_li_tl?ie=UTF8&camp=1789&creative=9325&creativeASIN=B004X1PB3I&linkCode=as2&tag=kirillrunz-20&linkId=48138481f61bd06a18aef9874f5aab16 - Engraver =as_li_tl?ie=UTF8&camp=1789&creative=9325&creativeASIN=B002L3RUW0&linkCode=as2&tag=kirillrunz-20&linkId=5d2685f5b478aefbccc2e1234d97ca32 - Reusable Half Face Cover with Safety Glasses =as_li_tl?ie=UTF8&camp=1789&creative=9325&creativeASIN=B087CZSH64&linkCode=as2&tag=kirillrunz-20&linkId=edbf0888737b568116d5e8d8cfb2ff8f - HeatGun =as_li_tl?ie=UTF8&camp=1789&creative=9325&creativeASIN=B07FM974CY&linkCode=as2&tag=kirillrunz-20&linkId=177065a0711b59f1e854aad6f68d1a29 - Professional Level IR Non-Contact Thermometer =as_li_tl?ie=UTF8&camp=1789&creative=9325&creativeASIN=B07PLHR7W1&linkCode=as2&tag=kirillrunz-20&linkId=e7887c35c45eb8e44a62e86b170451cb - Digital Caliper =as_li_tl?ie=UTF8&camp=1789&creative=9325&creativeASIN=B00Z5KETD4&linkCode=as2&tag=kirillrunz-20&linkId=17f5919f23d059f754be90e0743b45d6 - T Measurements Ruler =as_li_tl?ie=UTF8&camp=1789&creative=9325&creativeASIN=B07DNKG8NR&linkCode=as2&tag=kirillrunz-20&linkId=1c0342aa1af920f59451f314ed81975c - Mechanical Pencil =as_li_tl?ie=UTF8&camp=1789&creative=9325&creativeASIN=B089QC2C8G&linkCode=as2&tag=kirillrunz-20&linkId=eb2b48a77b7703aec8d82e36a54cc88d - Carbon Copy Paper, Transfer Paper =as_li_tl?ie=UTF8&camp=1789&creative=9325&creativeASIN=B07KRKM8M4&linkCode=as2&tag=kirillrunz-20&linkId=a0a9276b78bacbe5066d411128f5e8f9 - Protractor and Compass Set with Ruler =as_li_tl?ie=UTF8&camp=1789&creative=9325&creativeASIN=B074GV3WKT&linkCode=as2&tag=kirillrunz-20&linkId=2c352fc9b37ef604495f698fb3f8472c - Protective earmuffs =as_li_tl?ie=UTF8&camp=1789&creative=9325&creativeASIN=B0017YLTAI&linkCode=as2&tag=kirillrunz-20&linkId=4c5bf21dea2dbce037985e8a1289f442 - Protective glasses =as_li_tl?ie=UTF8&camp=1789&creative=9325&creativeASIN=B07GBF8B2V&linkCode=as2&tag=kirillrunz-20&linkId=d0f7b1c9ea2a84946e9a94fec364b20e =as_li_tl?ie=UTF8&camp=1789&creative=9325&creativeASIN=B002A5DM3U&linkCode=as2&tag=kirillrunz-20&linkId=f7fd3429b55c37469ce9241df419d776