07 · The technology
A hundred years of flat faces. One mistaken assumption.
When the ball is struck away from the point that lines up with the head's centre of gravity, a torque is created. The head twists around its own centre of gravity during the half millisecond or so that contact lasts. Ball and face grip each other like two gears. A toe strike opens the head. The ball starts right and curves back left.
On drivers the solution has existed since the 1940s: bulge and roll, a radius across the face that gives the counter-spin exactly the room it needs to curve the ball back towards the target line.
On irons the industry collectively assumed the torque was too small to matter. Nobody measured it.
The sideways curvature on a mis-strike grows in proportion to ball speed. The harder you swing, the less controllable it becomes. For a fast player, a few millimetres of error on a long iron can be enough to miss the green completely.
Curved Face Technology
Avoda's answer is a progressive, CNC-milled horizontal curvature across the forged face. Progressive because long irons are swung faster and carry less loft. Less loft means less natural backspin, which lets the sideways curvature tilt the spin axis harder. The curvature is therefore most pronounced in the 4 and 5 iron and tapers down towards the pitching wedge, where loft itself masks the effect.
| 7-iron swing speed | Carry | Effect of a curved face |
|---|
| 95+ mph | Over 180 yds | Non-negotiable. The torque is massive. The curvature reduces dispersion dramatically. |
| 85–95 mph | 160–180 yds | Strongly recommended. Significant benefit for dispersion control. The curved face gives a measurable advantage. |
| Below 85 mph | Below 160 yds | Optional. Lower collision force makes the effect less pronounced. The difference is subtle. |
The length systems
In a traditional iron set the shaft grows half an inch per club. The player is forced to stand further from the ball, adjust spine angle, change swing plane and move ball position for every club. That compensating work is one of golf's largest sources of inconsistency.
| Same Length | The whole set built to one length, typically 37 inches. One set-up, one swing plane, one ball position. Distance gaps are handled through loft distribution and centre-of-gravity work. |
| Combo Length | All scoring clubs, lob wedge up to 8 iron, built to a uniform length, typically 36 inches. From the 7 iron upwards the set moves to progressively longer shafts to preserve leverage where it is needed. |
| Traditional | For the player who has already mastered the variable set-up but wants the forging, the centre-of-gravity placement and the curved face. |
Shafts are not simply cut down on an existing set. Every club in the Same and Combo systems requires its own dies and forging tooling so that head weight and centre of gravity are calibrated for that specific length.
The wedges — Split Sole Geometry
Traditional bounce is a static measurement: the angle between leading edge and trailing edge with the club sitting square. Avoda designs instead around how the player dynamically delivers the club to the ground, with the sole split into a front section that handles initial contact and a middle section that balances the resistance.
| Model | Character | Delivers for |
|---|
| W1 | Low leading edge, extremely low effective bounce | Firm, tight lies. A sweeping motion with minimal shaft lean. Players who open the face for height. |
| W2 | Mid leading edge, mid bounce | All-round. Centred ball position, moderate shaft lean. Works across soft and firmer ground. |
| W3 | High leading edge, high bounce, wider split sole | Soft conditions and thick rough. Ball further back, an aggressive descending angle of attack. Tolerates up to fifteen degrees of forward lean without the leading edge digging in. |
Two manufacturing routes
For the constant iteration elite players require, Avoda uses SLM, selective laser melting, where the head is built up layer by layer straight from a CAD file. It allows internal lattice structures that are physically impossible to cast, and a design iteration can be drawn in the morning and tested the next day. It is too slow and too expensive for the market.
Commercial models are forged instead from premium carbon steel. Forging forces the grain structure of the metal to follow the shape of the club and eliminates microscopic porosity, which is what golf calls soft feel. Every individual head is then clamped into a milling machine that creates the progressive curvature to micrometre precision.
