I modified an ultrasonic dental scaler I bought for $125 from China off eBay, plus $10 for a set of steel tips which are blunt by design. Scalers are normally used to break up hard tartar deposits ...

Ultrasonic tools or tooling such as ultrasonic resonators, ultrasonic anvils, ultrasonic blades, ultrasonic knifes, ultrasonic tips, ultrasonic concentrators, ultrasonic amplifiers, or ultrasonic ...