does a diamond whetstone take of lesti lol then what a carbide pull through sharpener

[15mtyler]

I was just wondering if a diamond whetstone pulled off anymore or any less steal from a knife blade then what a simple steel or carbide pull through sharpener Would

 

[dkb45]

Depends on how much you use the diamond stone. Either way, the carbide works by ripping off steel, giving you a terribly jagged edge that is actually pretty weak too. The stone will give you a much more uniform edge that is better in every way other than speed.

Also, lesti lol... Such an abundance of typos from so many people lately.

 

[Fred.Rowe]

The diamond plate will produce a uniform edge if you have good control; the finish and the amount of steel removed depends on the grit size.

I will agree that most carbide "V" sharpeners produce a less than satisfactory edge; but the ERU is "not" the average tungsten carbide "V" sharpener. The edge shown below is the result of using a precision tungsten carbide "V" sharpener.

 

[Jason B.]

Regardless of the tools it always takes the same amount of grinding to reach a apex. If you must remove 0.01 inches of steel to form a sharp apex then it doesn't matter if you use a diamond hone or a brick you still have to remove 0.01 inches of steel.

 

[Fred.Rowe]

Regardless of the tools it always takes the same amount of grinding to reach a apex. If you must remove 0.01 inches of steel to form a sharp apex then it doesn't matter if you use a diamond hone or a brick you still have to remove 0.01 inches of steel.

I like it; direct and to the apex.

 

[Obsessed with Edges]

There's also surface area to consider. Most of the pull-through V-sharpeners use very small abrasive inserts (carbide, ceramic, sometimes diamond), which can work very fast initially, then load up and/or clog with swarf. The old-school carbide hard-edged inserts don't necessarily load up as much, but they have other issues as previously mentioned. With the small diamond or ceramic inserts though, one needs to be more diligent about keeping those surfaces clean, else the sharpener will slow down dramatically. This is where a larger surface area, especially in diamond, can work faster for longer, between cleanings; more so if some form of lubrication is used on the hone (water, oil, etc) to keep the swarf from sticking. Even a small pocket hone in diamond is huge in surface area, compared to a V-type pull-through using the same abrasive type. On a per-pass basis, the diamond hone will be a lot quicker and leave a cleaner scratch pattern as well; additionally, the grind lines from a regular hone can be oriented in the proper direction (perpendicular to the cutting edge, depending on user's style & habits), which is something a pull-through won't do.

I think a well-designed pull-through has it's place, especially if it's less-prone to damaging edges than the usual carbide variety. Fred's model looks promising in that regard.


David