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TOPIC: How Much Paste?

How Much Paste? 2 years 3 months ago #4054

  • wickededge
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The way the paste works on the strops for knife sharpening is fascinating and has been much discussed in other threads, so in this post, I'm just going to kick off the conversation about how much paste to apply and how often. There are essentially three different actions that the strops perform:
  1. Abrading
  2. Honing
  3. Burnishing

The amount of paste on the strops will directly affect the ratio of burnishing:abrading, honing:abrading, honing:burnishing. I've found that I don't need a whole lot of paste to get my ideal ratio going. My preference for stropping is a to have the ratio weighted more heavily toward burnishing and honing. When the strop is burnishing well, it's also honing well. This happens when there is considerable "stiction" between the leather and the metal which occurs when there is enough paste to create a tight seal between the metal and leather, but not so much that the paste begins to lubricate. Having more heavily pasted strops will give you more abrasion and less burnishing and honing. I start out a fresh set of strops with the equivalent of a thin bead about 1" long shared between the two strops. I work that in by rubbing the strops together, working the paste in as well as I can. If I'm patient enough, I'll let the paste dry. From there, I'll use the strops a lot until they start to get tacky. If they don't get tacky after a lot of stropping, I'll apply just a little more paste and repeat the process. Once the strops are tacky feeling against the blade, they're just right for my taste. I usually only reapply the paste after 50-100 knives and only then just a little.

Please share your thoughts and experiences on applying and reapplying the paste.
--Clay Allison
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Re: How Much Paste? 2 years 3 months ago #4070

  • StevenPinson
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Clay,

I have found from doing sample buttons for thermal spray (on a Beuhler wheel) that "IF" you just agitate the plate paste carrier with a clean toothbrush and a little DI water you can get alot more mileage from the paste. I do not see why this would not work on a balsa or leather strop as well.
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Re: How Much Paste? 2 years 3 months ago #4071

  • wickededge
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Steve,

Do you mean agitating the leather or balsa prior to applying the paste?
StevenPinson wrote:
Clay,

I have found from doing sample buttons for thermal spray (on a Beuhler wheel) that "IF" you just agitate the plate paste carrier with a clean toothbrush and a little DI water you can get alot more mileage from the paste. I do not see why this would not work on a balsa or leather strop as well.
--Clay Allison
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Re: How Much Paste? 2 years 3 months ago #4072

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Clay,

Either or ... the trick is to increase the surface area of the carrier. Before use gives more area for the paste to be spread out on and the "after use/application" allows the residual paste to be rejuvinated by the increase in area as well.

NOTE: A suede carrier might be a wonderful thing for stropping with paste.
Last Edit: 2 years 3 months ago by StevenPinson.
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Re: How Much Paste? 2 years 3 months ago #4073

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StevenPinson wrote:
Clay,

Either or ... the trick is to increase the surface area of the carrier. Before use gives more area for the paste to be spread out on and the "after use/application" allows the residual paste to be rejuvinated by the increase in area as well.

NOTE: A suede carrier might be a wonderful thing for stropping with paste.

I get what you mean now - I've done what you're describing with a wire brush and it definitely allows loading more abrasive. The drawback for me is that when the leather surfaces is interrupted, there is less "stiction" so I get less of the burnishing affect and more abrading. I think that the brush method is perfect if you want to tightly control the micro-teeth you're creating with the strops.
--Clay Allison
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Re: How Much Paste? 2 years 3 months ago #4074

  • KenBuzbee
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I know what you're talking about, Clay. I go for the same action with my paddle strop.

As an aside, the "normal" motion is very touchy with the strops. Second knife and I've already nicked one.... I was trying to always go up but it isn't that easy when moving along the edge. Maybe I should just go straight up, and not try to go along the edge?

Ken
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