Description

This innovative design uses tempered float glass as a foundation for each stone, giving it a degree of dimensional stability and strength while ensuring that all the abrasive is usable.

The stones are 210mm × 70mm × 11mm (8 1/4" × 2 3/4" × 7/16") overall with 5mm of usable abrasive thickness, and weigh about 14 oz (400g). The 500x stone is also available with a thicker 10mm abrasive layer (15mm thick overall) for those using this stone regularly to grind bevels; it weighs 19.75 oz (560g). Use with the Shapton stone holder or field holder for a solid base that holds the stone at a good working height.

The GS series has the largest range of grits and will appeal to technical sharpeners who can build a sharpening regimen that meets the needs of any blade. The HR stones are the regular stones; for forge-welded composite steel blades, Shapton recommends the HC-designated 4000x, 6000x and 8000x stones (sold separately) that use a different abrasive agent best suited for those blades.



Sharpening
Stage
Grit
Range
(µ)
Micron
(µ)
GlassStone Range
Code
Shaping
30.1–150
  122.5 120 1
30.1–150 66.82 220
  45.94 320
Grinding
10.1–30
20.1–30 29.4 500 2A
  25  
15.1–20 20   2B
10.1–15 14.7 1000 2C
  11.5  
Honing
3.01–10
8.01-10 9.8   3A
6.01 7.35 2000 3B
  6.7  
3.01-6 4.9 3000 3C
  4  
  3.68 4000
Polishing
0.25-3
1.51-3 3   4A
  2.94  
  2.45 6000
  2  
  1.84 8000
0.76-1.5 1.47 10000 4B
  1.2  
  1  
  0.92 16000
  0.85  
0.25-0.75 0.49 30000 4C
  0.44  

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