12-18-2021, 01:03 AM
(This post was last modified: 12-18-2021, 01:11 AM by KnifeGrinders.)
Of recent, SET helped us determine the best edge angle for knives of "supersteels".
Full report: What Edge Angle is good for Supersteels
Video of the SET experiments: https://youtu.be/WC3oVIKhlMs
Video of the data and conclusions: https://youtu.be/eqjgeWcsHEI
SUMMARY
We have done a research sharpening knives of tool steel, “supersteel” of hardness HRC 60, and "superhard supersteel” of HRC 70 at 10, 11, 12, 13, 14, 15, 17 and 20 degrees per side and testing edge stability of each of these edges.
The best edge retention in conventional tool steels like D2 or K110 shows a 15 dps edge.
In “supersteels” the best retention has a 12 dps edge;
and “superhard supersteels” of HRC 65-70 hold well a 10 dps edge.
Please note, that we sharpen such steels only with CBN and diamonds from start to finish.
The same steels, but sharpened with conventional abrasives, will have a less stable edge, even if sharpened at 20 dps.
Full report: What Edge Angle is good for Supersteels
Video of the SET experiments: https://youtu.be/WC3oVIKhlMs
Video of the data and conclusions: https://youtu.be/eqjgeWcsHEI
SUMMARY
We have done a research sharpening knives of tool steel, “supersteel” of hardness HRC 60, and "superhard supersteel” of HRC 70 at 10, 11, 12, 13, 14, 15, 17 and 20 degrees per side and testing edge stability of each of these edges.
The best edge retention in conventional tool steels like D2 or K110 shows a 15 dps edge.
In “supersteels” the best retention has a 12 dps edge;
and “superhard supersteels” of HRC 65-70 hold well a 10 dps edge.
Please note, that we sharpen such steels only with CBN and diamonds from start to finish.
The same steels, but sharpened with conventional abrasives, will have a less stable edge, even if sharpened at 20 dps.
http://knifeGrinders.com.au