Prepare and Position the Credit Card Guide

What happens here

For a practical paint edging solution, select a standard, flat paint brush. Take an old or unused credit card (or any similar stiff plastic card). Position the long edge of the credit card against the metal ferrule (the metal band holding the bristles) of the paint brush. Ensure that a portion of the credit card extends outward, slightly beyond the tips of the brush bristles. This extended edge will serve as a rigid guide, allowing you to create a straight, clean line when painting against another surface. The precise amount the card extends can be adjusted based on preference.

Goal: Precisely position the credit card on the paint brush to create a straight edge guide.