Models Comparison

Since these cover several orders of magnitude a logarithmic scale is most appropriate

Sigma Power Ceramic sharpening stones are used for sharpening knives on Hapstone and Edge Pro knife sharpeners

Tam O'Shanter stones may have slight natural imperfections

BBW stone does not require any preparations

universal angled clamps for hapstone r2 pair Models ComparisonUniversal Angled Clamps for Hapstone R2 can be turned inward (for small knives) or outward (for long knives). Clamps utilize flexible flat spring and spacer screws to secure knives of any shape including a full flat grind. The kit includes 2 clamps (left and right). Asymmetric clamps are part of Hapstone R2 Standard and BLACK kits.