Random Thought Thread

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Okay

This is actually really gross....

That sounds and looks gross 🤮

But….Freshly caught salmon, the skin properly cleaned (blood line scraped off and completely scaled), grilled over a charcoal or hardwood fire outdoors, a bit of salt and pepper, dipped in tartar sauce, now that’s pretty darn good.

The bagged stuff, hard pass 😝
 
I added some more steels to my messy chart.

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"Edge retention" on that chart should be labeled "abrasive wear resistance". IMO.

The terms are often used interchangeably and they are different properties.

Abrasive wear resistance is equal to edge retention only when an edge is lost through just abrasive wear which is not how an edge is usually lost, unless you're just making lots of light cuts in abrasive material. Edge stability is equally important but more difficult to quantify.
 
"Edge retention" on that chart should be labeled "abrasive wear resistance". IMO.

The terms are often used interchangeably and they are different properties.

Abrasive wear resistance is equal to edge retention only when an edge is lost through just abrasive wear which is not how an edge is usually lost, unless you're just making lots of light cuts in abrasive material. Edge stability is equally important but more difficult to quantify.
Agreed, it's just what's most quantifiable. If you are doing more hard chopping than slicing cardboard or plastic, you should replace CATRA with hardness.

high-alloy-toughness-3-7-2024.png


stainless-toughness-10-19-21.jpg
 
Agreed, it's just what's most quantifiable. If you are doing more hard chopping than slicing cardboard or plastic, you should replace CATRA with hardness.

high-alloy-toughness-3-7-2024.png


stainless-toughness-10-19-21.jpg


You might find that a lot of those high hardness alloys don't have the best edge retention in harder use like chopping either.

Many alloys, such as D2, behave very differently at the same hardness depending on their heat treat. They can have essentially the same abrasive wear resistance and hardness but have very different edge retention characteristics in normal use.

To date, my best efforts at trying to measure the differences in edge retention due to high or low edge stability are comparative in nature rather than quantitative. It's not ideal.
 
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