What You'll Need
- Loft and lie bending machine with built-in gauge
- Brass bending bar
- Lie board or impact tape (for validation)
- Sharpie or grease pencil
Before You Bend — Know What You're Working With
Bendable materials and approximate safe ranges:
- Forged carbon steel (1020, 1025, 8620): up to 3°+ — softest, most forgiving
- 304 stainless steel: 5–7° — exceptionally bendable
- 431 stainless steel: ±2° max — most common cast iron material
- 17-4 stainless steel: ±1–2° — harder casting, requires more leverage
- Cast iron / brittle alloys: do not bend — molecular structure can fracture
Never bend:
- Modern drivers and fairway woods — adjust through the hosel sleeve instead
- Adjustable-hosel hybrids and irons — use the manufacturer's settings
- Putters with face-balanced inserts unless the manufacturer approves
When in doubt, check the manufacturer's published bending tolerances before clamping anything.
Step 1 — Measure the Current Specs
Clamp the head in the bending machine with the shaft seated in the cradle. Read the existing loft and lie off the gauge. Write them down — you'll need a baseline.
Step 2 — Bend the Lie Angle
Lie effects (right-handed):
- Too upright (toe up at address) → ball pulls left
- Too flat (heel up at address) → ball pushes right
- Slide the brass bending bar over the hosel, snug against the head.
- Apply slow, steady pressure in the direction you need:
- More upright: push the bar up
- Flatter: push the bar down
- Release, re-read the gauge, and adjust again if needed. Bend in small increments (1° at a time).
Step 3 — Bend the Loft
Loft side effects you need to plan for:
- Strengthening loft (less loft) → increases offset, reduces bounce
- Weakening loft (more loft) → decreases offset, increases bounce
The 2° rule applies to loft adjustments specifically — beyond that, the sole angle changes enough to affect turf interaction.
- Reposition the bending bar for vertical leverage.
- Bend toward or away from the face plane to weaken or strengthen.
- Re-measure. Cross-check the lie reading — bending loft can shift lie slightly.
Step 4 — Validate the Fit
For lie angle, the gauge tells you the spec — the lie board tells you whether it works for the player.
- Apply impact tape to the sole.
- Have the player hit shots off a lie board.
- Toe-down marks = too flat. Heel-down marks = too upright. Center marks = just right.
Important Notes
- Match across the set. Lie angles should progress consistently from long irons to wedges (typically 0.5° upright per club shorter). Avoid random variance through the set.
- Re-bending fatigues the metal. Every bend adds stress to the hosel — clubs that have been bent multiple times are more likely to crack on the next pass.
- Modern face-insert wedges can have published bend limits as tight as ±1°. Always check.
- PING irons use a color-coded dot system instead of fixed-angle bends. Verify before clamping.