Whether you snapped a string during an aggressive smash or your string bed has lost its pop and tension over time, knowing how to properly restring a badminton racket preserves your carbon frame and restores crisp shot performance.
Here is the complete step-by-step guide to restringing a badminton racket using professional tension standards and knot patterns.
Tension Guide: Choosing Your String Poundage
| Player Level | Recommended Tension | Sweet Spot Size | Power & Control Balance |
|---|---|---|---|
| Beginner | 20–22 lbs (9.0–10.0 kg) | Large & Forgiving | Maximum repulsion power (trampoline effect) |
| Intermediate | 23–25 lbs (10.5–11.5 kg) | Medium | Balanced power, control, and durability |
| Advanced / Pro | 26–30+ lbs (12.0–13.5+ kg) | Small & Exact | Pinpoint precision, requires high swing speed |
2-Knot vs. 4-Knot Stringing Methods
- 4-Knot Method (Yonex Standard): Uses two separate string pieces—one for vertical mains and one for horizontal crosses. This is the official tournament standard because it distributes tension evenly across the frame and allows you to add +2 lbs of tension to the cross strings.
- 2-Knot Method: Uses a single continuous piece of string for both mains and crosses. Faster to string, but offers less customizable cross tension.
Step-by-Step Racket Restringing Process
Step 1: Cut Out Old Broken Strings Immediately
When a string snaps on court, cut the remaining strings out in a crisscross pattern immediately from the center outward. Leaving broken strings under uneven tension can warp or crack an expensive carbon frame.
Step 2: Inspect and Replace Damaged Grommets
Check the plastic grommet eyelets around the frame. Replace any split or flared grommets to prevent fresh strings from coming into direct contact with sharp carbon frame edges.
Step 3: Mount Racket on the Stringing Machine
Secure the racket into the 6-point mounting system with top and bottom load spreaders. Tighten securely to prevent frame distortion during high-tension pulls.
Step 4: String the Main Strings (Vertical)
Start from the top center grommets and work outward symmetrically to the left and right, tensioning strings one at a time with your electronic or manual tensioner and locking with clamps.
Step 5: Weave and Tension Cross Strings (Horizontal)
Weave the cross string in an over-under pattern from the top of the frame down toward the throat. Increase tension by 10% (+2 lbs) on the crosses to maintain the frame’s round shape.
Step 6: Tie Off Secure Knots
Tie off using standard Parnell or Yonex finishing knots on designated tie-off grommets. Snip excess string with 3mm tail clearance.
Frequently Asked Questions
How often should you restring a badminton racket?
A reliable rule of thumb: restring your racket per year as many times as you play per week. For example, if you play 3 times a week, you should restring your racket at least 3 times per year to maintain string elasticity.
Why are cross strings pulled 2 lbs tighter than mains?
Main strings pull the racket frame vertically, making it slightly narrower. Pulling cross strings 2 lbs tighter counteracts this pull and preserves the racket’s original factory shape.