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Chef'sChoice Model 312 Diamond UltraHone Knife Sharpener
Model: Model 312 (SKU 0312000) · US configuration
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A powered two-stage diamond sharpener with a fine-diamond first bevel and ultrafine-diamond finishing stage, maker-listed for straight-edge knives in the 20-degree class with separate serration instructions; its manual excludes scissors and axes.
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Explore this buying guide ↗Why consider this model?
- Consider the current-reference US Model 312 when a powered, guided two-stage routine is wanted for maker-listed 20-degree-class straight edges, or when a countertop machine's separately described Stage 2 serration procedure is useful. Both stages use diamond abrasives, unlike the Model 320's flexible finishing disks.
Tradeoffs to weigh
- Its single 20-degree-class plain-edge capability is a maker label, not a confirmed per-side or included-angle convention or advice for a specific knife; the serration plan has no numeric angle in the manual. The manual excludes scissors, axes, blades that do not fit freely, outdoor use, and honing oil or other sharpening lubricants. Normal sharpening is dry, although a limited unplugged cleaning procedure uses minimal water on Stage 2 disks and requires complete drying before use. The source pages do not verify a separate leather strop, full box list, blade-length limit, dimensions, weight, voltage, or present replacement-disk availability.
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