Scrub Paint from Bristles and Ferrule

What happens here

The presenter demonstrates holding the paint brush against the inside edge of the bucket for support. He uses the wire brush in a downward motion, stroking it along the bristles and the metal ferrule of the paint brush. This action is designed to scrape and dislodge paint residue. He also rotates the brush to ensure all sides and the flat part of the bristles are thoroughly scrubbed.

Goal: Position the paint brush against the edge of the bucket and use the wire brush to vigorously scrub off any dried or caked-on paint from the bristles and the ferrule.