Skate Hollow: ROH & FBV

Skate Hollow helps hockey and figure skaters pick the right radius of hollow (ROH) and understand exactly what it does to the blade.

Pick a hollow and instantly see:
- Bite (edge) angle — how much the edges grip the ice
- Hollow depth — how deep the grind sits
- FBV equivalent — the closest Blackstone flat-bottom-V feel (100/50, 90/1, and more)
- Inch and millimeter, side by side

FIND YOUR HOLLOW
Not sure where to start? Enter your weight, skill level, position, and ice hardness to get a sensible starting-point range, based on widely used sharpening guides. It is a starting point, not a rule — your final choice is always yours and your sharpener's.

SAVE YOUR SKATES
Keep a list of your skates with their preferred hollow, FBV, and blade width, so you can tell any shop exactly what to grind.

BUILT RIGHT
- Free for 14 days, then a single one-time purchase. No subscription, no ads.
- Works completely offline. Nothing leaves your device.
- No account, no tracking, no permissions.

The math is exact geometry; the recommendations and FBV feel-equivalents are guidance from published sharpening resources. Final sharpening and safety are the responsibility of the sharpener and skater.