How to Use the Lansky Clamp: Clamping Thicker Blades

November 15, 2013


In our last post, How to Use the Lansky Clamp: The Basics, we went through the steps to get the most out of your Lansky clamp and ensured that we all understand how to properly secure a knife in the clamp. Proper manipulation of the clamp will not only improve your experience when using the Lansky Clamp, but will also improve the edge you produce. One question/concern I often hear is “How do I sharpen thicker blade knives using the Lansky system? My thicker blades won’t fit/seem to wiggle around in the clamp when I try to sharpen them.” If I had to guess, I’d say the rise in interest for thick, survival style knives such as ESEE Blades and the Bear Grylls Survival have made this problem more prevalent. Luckily, clamping thick knives so there is no play when sharpening is fairly easy! We just need to remember the clamping basics and apply those same techniques using some additional hardware provide when you receive a Lansky Controlled Angle Sharpening System.


Just like in our last post, How to Use the Lansky Clamp: The Basics, we want to start with the clamp as it came in the original kit box, fully tightened. You’ll notice that included in the Lansky Controlled Angle System we have provided two additional extra long screws. One extra long wing screw (for replacing the red thumb screw) and an extra long standard flat head screw (for replacing the front screw). These screws are included in all Lansky Systems specifically for sharpening thicker and heavier blade that may need more torque to hold onto your blade safely.


 1. First, we’ll remove the front Phillips head screw from the clamp and replace it with the extra long flat head screw. Then, we’ll remove the red thumb screw and replace it with the extra long wing screw. (There is no need to tighten these replacement screws all the way just yet as we will be manipulating them)


2. Loosen the extra long front screw so that the end of the screw is flush with the bottom of the clamp on the opposite side.


3. Tighten the extra long wing screw all the way. Then, loosen the wing screw about 2-4 full turns.


4. Now we are ready to clamp our extra thick blade. In this case I have a Bear Grylls Fixed Blade Survival Knife. A High Flat ground style blade (kind of hollow ground too), the spine of this blade has a thickness of 3/16”. Because it is a High Flat ground blade I will be clamping right onto the flat, upper portion of the blade (close to the spine).


5. Our front screw should already be fully loosened so we’ll go ahead and start clamping the blade by tightening the front extra long screw. (It’s okay to use a flat head driver to tighten this screw, but it is critically important that you do not over tighten the screw, the front screw is there to hold the knife, not to provide the torque needed to secure blade in the clamp.)


Now that we have the front screw tightened on the blade we will fully tighten the back, extra long wing screw. It’s important to try to tighten this screw all the way, so that the wing is flush with the top of the clamp. We do this because if it is not fully tightened the wing can get in the way of the 17° angle guide. (You may need to play around with the setting a bit to make sure you get the ideal fit.)


7. Notice how exaggerated the angles of this clamp set up are. The same rules apply as with normal thickness knifes,

“ …if the distance between the back ends of the clamp is greater than distance between the jaws of the clamp, (i.e. thickness of the blade) then you will be applying much more torque on the knife blade and it should have no play. If the distance between the back ends of the clamp is less than that of the thickness of the blade you are sharpening, then the blade will not be secured properly."

And that’s it folks! We have successfully clamped an extra thick, heavy knife that we wouldn’t be able to sharpen with the Lansky Controlled Angle System without the extra hardware. Because of the extra torque and leverage provided by the extra long screws, this blade has absolutely no play when secured in the clamp. To learn more about how to use the Lansky Controlled Angle Clamp, keep checking out the Lansky Blog. We’ll go through even more Lansky Clamp hacks in the upcoming weeks. If you have any questions make sure to leave a comment below.


Be Smart, Be Safe and Stay an Edge Above the Rest! 




Category: How To Sharpen

1 Comment

Jun 10th, 2014
I'd wish they would explain this on the instructions book....

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