Iron out the kinks

Photo of a clothes iron
To iron out the kinks means to fix small problems or difficulties so that something works smoothly. People say this when they improve a plan, system, or process after noticing minor issues.

The expression comes from ironing clothes. An iron removes wrinkles and uneven spots from fabric, making it smooth and tidy. In the same way, the idiom describes smoothing out problems.

The team spent the afternoon testing the new software to iron out the kinks before the launch.