why can't you see where scandi knives are laminated?

[Andy]

On the F1 there is a clear line where the differnt steels meet. On my knife with a Trond blade you can't see where one steel finishes and the other starts. Why is this?

[keith_beef]

On the F1 there is a clear line where the differnt steels meet. On my knife with a Trond blade you can't see where one steel finishes and the other starts. Why is this?


Good question, Andy.

My Poul Strand blade has a visible line between the meat (hard core) and the bread (soft sides) in the sandwich.

The only Trond blades I have a two Felleskabs, which are not a sandwich construction (simple "20" steel, he calls it, more or less equivalent to O1).

I haev a Steen Nielsen blade, in Firewood (by Dave Barker). I don't know if this is a sandwich... There's no clear difference between the meat and the bread in this blade.

Could it be something to do with the way the blade is polished or etched (like the way a hamon is revealed)?


KKK.

[Stew]

Andy,

On my Trond blades, they came with a slight concave grind and the join wasn't initially noticeable because of the vertical grind lines. As I've sharpened the bevels flat, the lines have become noticeable.

It's there.

[Basemetal]

Depends on whether and how the two steels oxidise. to see the line they need to do so differently -which they almost certainly will. If you want to bring up the line a vinegar dip should accelerate the process, but in time it should appear. Sharpening can also reveal the line (eg on a Frost-Mora). As Stew says -flattening allows closer examination of the surface and the difference in appearance of the steels is easier to see .

[TLM]

What you see as the line is a difference in the way the two steels reflect light. That is affected by many things, as Stew and Basemetal imply the main things are related to surface treatment, grinding and possible etch. Varying those you can either bring it out or supress it.

TLM

[kniv-per]

What you see as the line is a difference in the way the two steels reflect light. That is affected by many things, as Stew and Basemetal imply the main things are related to surface treatment, grinding and possible etch. Varying those you can either bring it out or supress it.

TLM


I Agree ..... :)

The polishing might be the last factor that makes it hard to
see the line..

Robert Mattsson polishes his laminated so fine, that I sometime have a hard time to see if it's fullsteel or laminated..