SVST World Cup Triangle Stones

Triangular stones for hand finishing, shaped to sit between the fingers so you can feel what the stone is doing on the edge.

That sounds like a small thing and is not. Final edge work is done by feel — you are detecting a burr you often cannot see — and a shape that gives control and contact is what lets a technician work quickly without taking off more than intended.

• Triangular shape for grip and control in the fingers
• For precise hand finishing on race skis
• Long used by World Cup technicians

Where these are used: at the hill, more than at the bench. A triangle stone lives in a pocket or a race bag for breaking burrs and touching up an edge between runs, where you have no vice and no time.

The three faces also let you get at the side edge, the base edge and the transition without changing tools.

Keep it flat against the bevel and work in one direction, with light pressure. If you are removing visible metal you want a cutting stone instead; a finishing stone should refine, not reshape.

See all files and stones and edge beveling tools.