Stringing machine

A stringing machine is used to re-string tennis racquets. There are 3 types of stringing machines: drop-weight, manual, and electronic.

Dropweight stringers are inexpensive stringers that use a weighted bar to achieve the desired string tension. They take longer than other stringers and are impractical for professionals.

Manual crank (lockout) stringers use a crank to achieve the proper tension, at which point it locks into place. These stringers allow racquets to be strung quickly, but the string job will lose tension more quickly than racquets strung on dropweight or electronic stringers.

Electronic stringers control the tension with a computer-directed electric motor, allowing for quick work and high performance.