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I Forge Iron

Newest pattern welded billet for knives.


kayakersteve

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I started this at 15 layers of 1084, 5160, 15N20 and folded 3 times intially, then twice after that - Total layer count now 90 layers.  I will keep here and draw out now as I like the thicker definition from lower layer counts - Dont know why pics are out of order below, but you will understand when looking

 

Not sure what I will do to pattern it yet.

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I dont understand your math,  If you only fold in half  your starting stack of 15 layers,  first fold is 30 layers ( 2 x 15 = 30 )   the next makes 60 ( prev 30 x2 = 60 ) one more fold would make is 120 layers ( 2 x 60 = 120 )

 

You have a pic stating 45, which I assume would have been if cut into 3 sections and stacking for the first weld ( 3 x 15 = 45)  a weld 

 

 

but you said made 5 folds and got 90 layers that makes  me confused where does 90 come from

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I started this at 15 layers of 1084, 5160, 15N20 and folded 3 times intially, then twice after that - Total layer count now 90 layers.

this is why I was confused,  I saw the 5 folds thing...  fold is a bad word  lol I think of fold as an operation not a group of layers

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Guys, every FOLD DOUBLES the count. 15 to the 5th power = 480 layers.

 

What you're doing is stacking so it's simple addition, multiplication will tell you the total. 5x15=75

 

To get a 90 layer billet you must've stacked 3 and folded once. Had you folded it twice it'd be 180 layers.

 

Sorry to break your record Steve but no, you aren't wrong, your mathfu is strong. . . this time. <grin>

 

Frosty The Lucky.

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Now I'm confused - Was 15 layers - Welded and lengthened - Cut into three equal pieces and stacked - Welded again and now 45 layers - Cut in half and stacked - Welded again - now 90 layers.  The pics below are a 3 1/2" section I cut off to draw out tomorrow.  Welds look great to me.

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Looks to me like everyone else is confused..... :unsure:

 

Yep and ain't this a definitive example of why professional jargon is critical to communications within a trade.

 

My mother explained to me why jargon (not that she used the word jargon, I was maybe 8) is important by asking me how I thought a cake would taste if "C" could mean anything from: Cup to Cap to Chocolate to Cod liver oil. When she said Cap she held up a bottle cap, I knew what a cup was, chocolate most especially and cod liver oil ewwwwwww!

 

Does it matter if fold, stack and who knows what all mean the same thing or maybe each changes definition every time it's used in the same paragraph? I love word play but we're here primarily for accurate communications, though a pun slips through once in a while. <grin>

 

Frosty The Lucky.

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  • 1 month later...

I count "folds" as being how many hinges there were:  so a Z fold has 2 hinges and triples the number of layers and a regular fold has 1 hinge and doubles the layers. Cutting and stacking 3 high is equivalent to a Z fold. So the above piece has 3 folds: 1 Z and one Double and 90 layers

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Now we all know that 'mafs' is almost as hard as 'rithmitic' so I can understand the complication, so doesn't the number change cause you grind away half a layer(maybe 1/3 to2/3) every time you stack?

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I was taught -  the general rule is 3% loss in layers after the third fold for counting, but the only real way is cut the blade in half and use a microscope and count them. It is not worth it, the layer count is only meaningful to the one making the billet for pattern creation anyway.

 

In the end no one really worries about layer being counted after its finished

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