Weird Angle Issue…

Curious; what folder did you buy?

If you know what angle you want to set at, and your sure your knife is set correctly in the WE clamp I would utilize an angle cube to verify my settings. You didn’t mention which model wicked edge you were using or if you used an angle cube.

NorCalQ wrote:

I decided to re-establish the angles on my Tormek to 25*. The Tormek did a great job at setting the bevel angels nice and even, again, to my eye. On to the WE… Now, when I set left side of the blade to match the new bevel angle, that angle was 24.4*…pretty close to the 25* set by the Tormek. Problem is, when I set the right side of the blade to 24.4*, it was no where near the set bevel. I used a marker on the bevel to see what the angle was and it measured out to be 21.7*. So why the difference?

Reads to me that you’re assuming the angle you applied with the Tormek, were the same on both sides.

I figure since most of us might be in the same boat (shelter in place), the below might help you or someone else out; regardless it works for me…

One of the challenges I had to learn whether using an earlier style gen clamp or the 3rd gen clamp that I’m using now, is finding the true center of the blade edge in relation to how the clamp grabs the blade.

I favor Spyderco knives with a full flat grind though I found that even though I thought I had them clamped pretty straight the angle cube typically showed a lower angle on the left side of the WE vs the right side.

Below is the method I use (got it from gleaning other’s posts); I’m no mathematician but this forced me to learn…

I use the AAG to record my settings as well as post them into the WE knife settings database.

Yesterday I sharpened my Spyderco Para 3, here’s how I did it to keep the bevels even:

I typically match the pre-existing grind angle on the LEFT side of the WE, in my case the angle was close to 18°; I then placed the RIGHT side of the WE at 18° as well for a starting point.

Using my angel cube (TIP; only use one platen to take your initial Left/Right measurements) the Left side measured 17.70°; the Right side measured 18.43°

Next I take a 1.5″ wide putty knife and butt the Angle cube up against it, I rest the putty knife & angle cube next to the blade on both Left & Right side and record the readings.

Think of the Left side of the WE as your Positive side and the Right side as the Negative side (that’s how I remember it in my mind).
On the Left I got a reading of 1.74° (pos); on the Right I got a reading of 2.81° (neg); Add the positive reading with the negative reading and I get 1.07°; next I divide this by 2 = .53°

I add .53 to the initial Left positive side reading 17.70 = 18.23°
I subtract .53 from the initial Right negative side reading 18.43 = 17.90°
I add these together 18.23 + 17.90= 36.13 inclusive; divide this by two = 18.06° DPS
If you really want to get it to 18° per side for that particular knife grind, then subtract the .06 from both the Left/Right i.e.
Left = 18.17°
Right = 17.84
Added up = 36.01° divided by 2 I end up with 18.005° DPS

My settings for sharpening this particular blade will be:
WE Left setting; 18.17°
WE Right setting; 17.84°

NOTES:

• My rod holders have an adjustment nut so I can dial them in precisely
• I do this each time I sharpen a knife, even if it’s the same one; it clamps up differently each time

As I’ve written earlier I do this so I can figure out what angles my platens should be set at so I can get even bevels on my folders, even though the Gen 3 is made to hold distally tapered blades better, they don’t eliminate blade lean which can produce one bevel wider than the other.

It sounds like you’ll be re-profiling one side of the blade more than the other; as you look down on the apex of the blade you should be able to see at the tip which side will need more grinding to get you to where you want to be I hold a white business card below the tip so I can see which side needs it;  it may take a few sharpenings.

Attached image is an example of how I measure blade lean with the putty knife, any flat piece of metal will do as long as it has an even thickness (example of what I refer to as the positive side measurement).

thx, RSilva

• This reply was modified 4 years, 8 months ago by Toxophilus.
• This reply was modified 4 years, 8 months ago by Toxophilus.

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