Swivel Knife Stropping

First off, lets make a difference between a sharp blade and a polished blade:

  • Almost all blades are manufactured as “sharp” blades – that is, they come with the correct angles to their blades – roughly a 48 degree combined bevel as shown in the illustration below.
  • A polished blade is where those beveled edges of the blade has been stropped and polished to remove TWO things – the grinding marks from when the blade was manufactured and secondly the residue that builds up on the blade from the leather.

This means that sharpening a blade is seldom necessary.  I used my first swivel knife blade for more than twenty years before the stropping so deformed the shape that I had to put it on a grind stone and just reshape it again.

When you buy a new blade, here is what I suggest you do:

  • Spend at least half an hour stropping / polishing the blade as shown in the following video (card board with jeweler’s rouge on it works just fine).
  • Then you can start with it on the leather.
  • Every time you pick up your swivel knife to use it, strop it for a few minutes.
  • If you do a lot of work with it, strop it every five minutes.   After a while, you will get the feel of a blade that is gliding through the leather as if it is cutting through butter, and a blade that “stutters”.  As soon as it cuts with jerky movements, you know it needs more stropping.

I hope this helps – please contact me if you have any more questions.

 

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