Cool thread, Will. Bruce Bump has a long WIP thread over on Knife Dogs where he makes one of his crushed W feather pattern blades. He MIG welds the corners of the stack and edges of the billet in some steps to help prevent the the billet or stack from delaminating, on the shapr corners or edges. As you know, there is a LOT of stress involved in many of the steps in making these complex patterns. A couple of other tricks that I learned from his thread are to knock the corners down by putting the bar in your press or hammer at 45 degrees, make an uneven octagon, then turn to the 90 degree position to start crushing your W's. That gives the outside layers a little head start. Also, DON"T narrow down the billet until you absolutely have to. Try to get a stack or two done before you do and then do it slowly. When Claude Bouchonville and I did a W billet in his shop in Belgium, we really concentrated hard on that. The billet got out to over 2 1/2-2 3/4 inches wide in his press and rolling mill before we started knocking it down a bit in the subsequent welds to its final size of 1 1/2 to 1 3/4 inches wide and about 7/16 thick and it really seemed to help in avoiding the "uncrushing" of the pattern at the edges of the bar.
Thanks all. Jo great advice, that makes allot of sense. By taking my time this time I didn't have any de lamination.... until I started finishing the blade at dull red. The corners thing sound good, i'll try that on the next one.
I had a go with the other half of the billet today. Shaped at welding heat all the way down to about 4mm on the back, 3mm at the front. Also forged the tang part at welding heat, so it won't give a split a chance to start at the back.
I did give it a gentle run under the hammer at low heat to even things up but much more carefully this time, ground the profile and taper from there. Having to allow more material has left it a bit narrow for a Gyuto. In fact I think this one is a Hybrid.:D
Its now 49mm deep at the back, 250mm long. Taper is presently around 2.8mm 2mm 1mm. Will HT and grind from here. Just wanted some feedback on the profile.
As two more will be done allowing more material to stay on plan, this one will be a wild card.
So any feedback before I HT will be appreciated. More of a curve to the choil than my normal, I think it goes with the pattern but will probably take it a bit sharper so the hand does not slip down on pinch grip. Thoughts?
Looks like a squirrel's tail!
Way cooler than a regular feather pattern.
You should call that the "Quill Pattern". It's really nice!
excellent profile Will. love the pattern. leave it the way it is.
These were exactly my thoughts...If I had the scratch this would be a suji I would actually buy and use. Great work!
Originally Posted by sachem allison
Mark, you have a good way of looking at things, it really does look like a squirrel tail. I hadn't thought of that.
I'm glad I got a blade out of the last half so I can see what it looks like with the amount of layers and folds I did. I think it looks very natural, which is what I hoped for. I could maybe go a bit bolder with it. The bolder you go, it looks less natural and more funky if you see what I mean.:D
Thanks for the feedback on the profile, the curve is making me think about the handle design. I might try something that sweeps in a bit more rather than a tapered octagon. There will be damascus for the ferrule and endcap so it won't need to be very large to balance the knife. In fact I think i'll have to be careful not to make it handle heavy.
Been staring at it for the the last couple of days.. It grows on me.. seems to have depth and life.. doesn't look flat as the regular feather damascus.. I like it... squirrel tail... hmmnnn.. it bushy and definitely not a feather then as it is hair(y)..
Interesting... I suppose you are going to find an elegant name for it??
Too me it looks like the flame pattern being entrained through a venturi burner, a potter's perspective. I like it, a lot.
Will That is way to cool !!!