Sharpening hollow ground blades
- Thread starter peterkm
- Start date
All of the hollow ground blades I've had have had a micro or secondary bevel, so I've always used my Spyderco Sharpmaker
Mora knives are hollow ground, it's just very shallow.
I'm guessing you mean it has a secondary bevel, in which case 15-20degrees per side will be right for most things. I use a sharpmaker (unless it's a spyderco knife oddly enough)
I'm guessing you mean it has a secondary bevel, in which case 15-20degrees per side will be right for most things. I use a sharpmaker (unless it's a spyderco knife oddly enough)
Hi Peterkm,
A swift search should reveal plenty of detailed info on sharpening hollow ground blades. The basics are using gradually finer abrasive sheets over a mouse mat - when the blade is drawn spine first, the foam allow sufficient deformation to maintain the hollow.
There is a school of thought that hollow ground blades are weaker than skandi or flat grinds, on account of there being less material behind the fine edge - which can lead to a weaker edge that can chip or roll over hastening bluntness.
If you get really stuck, have a look over on Britishblades, they have sack loads of sharpening information.
ATB
Ogri the trog
A swift search should reveal plenty of detailed info on sharpening hollow ground blades. The basics are using gradually finer abrasive sheets over a mouse mat - when the blade is drawn spine first, the foam allow sufficient deformation to maintain the hollow.
There is a school of thought that hollow ground blades are weaker than skandi or flat grinds, on account of there being less material behind the fine edge - which can lead to a weaker edge that can chip or roll over hastening bluntness.
If you get really stuck, have a look over on Britishblades, they have sack loads of sharpening information.
ATB
Ogri the trog
I sharpen my hollow ground knives (Doziers, primarily) with sand paper on a hoodoo hone backed with hard (red gasket) rubber. On my hoodoo hone, I have glued rubber on one side and strop leather on the other side. It measures 4cm X 15 cm X 12-13 mm. It weighs almost nothing with six strips of sandpaper.
I lift the back of the knife off of the hone slightly and draw with the spine first. I use progressively finer sandpaper (320 to 600 to 1200 to strop charged with abrasive compound). Unless I really get wild with my knife, I don't ever have to use the 320 grit. This gives me a sharp knife with a convex secondary bevel. I never scratch the sides of the knife with the sandpaper and I don't have to hold the knife exactly the same for every stroke. The give in the rubber yields a smooth convex secondary bevel.
Steve
I lift the back of the knife off of the hone slightly and draw with the spine first. I use progressively finer sandpaper (320 to 600 to 1200 to strop charged with abrasive compound). Unless I really get wild with my knife, I don't ever have to use the 320 grit. This gives me a sharp knife with a convex secondary bevel. I never scratch the sides of the knife with the sandpaper and I don't have to hold the knife exactly the same for every stroke. The give in the rubber yields a smooth convex secondary bevel.
Steve
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