Ultrasonic Knife?

Hanboost C1 True Wireless Ultrasonic Cutter

Ultrasonic 40,000 Vibration - True Wireless - LED Light - 3 Power Mode - Full Metal Body

Lightweight & Portable - Fast USB Charge

To see it: CLICK HERE

I wonder how well it would cut balsa?

Are the replacement blades easy to find?

Could come in handy cleaning up 3D prints.