Forged Integral Not-Actually-Really-a-Chopper WIP

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Oct 20, 2008
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Okay. I started a separate thread for this to continue, for the sake of simplicity. Some folks had expressed an interest in seeing this knife progress and I'd like to share as well.

Disclaimer: This will not be a meticulously crafted WIP with excellent photos. I have a dialup connection, have to upload in 640x480 and it's still slow. Days will go by when I post nothing new here. I have several irons in the fire and this one is my "build whatever the heck I feel like" piece. It may take me a couple of weeks. Also, no refunds will be issued in the reasonably likely event that this thread ends in disaster.

I'll generally show progress on one side of the knife. This is also for the sake of brevity; rest assured that I've probably posted the better looking side to show you... Also, feel free to chime in if you've got something to teach me. I see this stuff as a two way street.

Here we go, I hope you enjoy. I've pasted in the body of the beginning of the other thread to start with.

I took a piece of W1, 1" round by 8" long and forged it into this blade. I got this steel from Deker, I love this stuff and it's priced so right.

Usually when I forge an integral, I leave the bolster area round and fairly thick, 5/8" or so. I thought I'd try something a bit different on this one. While a large blade, I want it to have a slim feel, so I forged the bar down to about 1/2" thick by 1" wide stock, then used my guillotine fuller to set down the start of the blade and the plunge about 7/8" apart. The resulting bolster is about 1/2" thick right now and will be a little slimmer when ground clean.

After setting the bolster, I forged the 2" to the right of the shoulder into a full tang, I guess about 4-1/2" long. It'll be tapered by grinding.

Then I forged the blade steel to the left of the bolster into a kind of hybrid camp/bowie thing. The blade has a mild clip which will be a little more pronounced after profiling. I forged the entire rest of the bar into a blade, I just figured I'd find out how long it wanted to be. It's been normalized twice.

Hammer wise, I broke the stock down with an 8# double jack, did most of the shaping with my 6# straight peen, and wet-finish-forged the bevels with my 3-1/2# flat faced cross peen. Now I have a couple blisters...

There is a lot of steel in one of those drops, the overall length is 15-1/4" and the blade is 10" from tip to bolster. I plan for this blade to get green canvas micarta, SS corbys, and a hamon.

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The blade is profiled. I threw a little bit of style into the grip area, and defined the clip more.

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The bolsters get flattened up roughly.

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The blade with the scale roughed off of it. I did this and the preceding steps with a dull 36 grit Blaze. I keep roughly 20 of these hanging on the wall of the grinding room expressly for this purpose. Scale just kills a new belt. The blade is clamped on a board with a square hole sunk into it at the bolster. The board is clamped into my little post vise.

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A closeup of my quickie knife board and the bolster area, still super rough.

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The bolsters defined more and the transitions roughly cleaned up and shaped with hand files. The files I used to do it. These radii are small, I can’t get my ½” wheel in there so I did it by hand. I prefer to do this slowly anyway.

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The bolsters matched up better, still roughly.

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More to come.
 
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I’ve ground a bevel on both sides of the end of the tang preparatory to hollow grinding.

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The tang hollow ground preparatory to tapering flat on the platen. Just hogged it out with my 8" wheel, still with a dull belt. It actually heated up a bit.

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The tang roughly flattened. I’ll get it totally flat after H.T.

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Grinding an edge onto the thick blank. This will serve as a guide when flat grinding, and doing this with a dull belt prevents stripping the abrasive prematurely from a new belt when grinding the flats.

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Flat grinding, with a sharp 36 Blaze. The bevel has been nearly pushed up to full height.

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I first drew the false edge on, then roughed it in freehand with a 36 grit belt on my 8” wheel, using an up and down motion with the blade vertical, sighting down it with strong light.

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They match ok now.

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The blade rough ground with the swedge/false edge. Sorry, kind of a dark pic.

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Cleaning up the swedge with 240 belt, slow speed, 8” wheel.

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Some of you will wonder at this point, “where the heck is the 220 grit belt finish grinding step?” Well, the belt situation around here is abysmal right now- I have like 15 220 and 240 belts on the wall that are dull as dirt, and no new ones on the way yet. By the way, I recently tried some purple Metalite 240 belts and was underwhelmed. I got one smallish knife apiece out of them. Those were my last sharp finish grinding belts.
SO, I turn to my trusty Don Fogg style sanding bar. It’s just ¾”x 3/8” mid steel bar stock, ground flat, about a foot long with electrical tape grips. I mask the grip area off, spray lightly with adhesive, unmask, and I’m good to go. Usually I have to spray it only once for one knife. Just peel off old paper, stick new on.

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Armed with 280 grit Rhynowet Redline paper. This stuff is great.

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I took the 36 scratches out by hand with 280 grit. It wasn’t bad. Of course, this is normalized W1. It’s starting to look like a knife. Also, I rounded the edge of the bolsters and drilled the tang holes so I can hang it while the clay dries.

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I cleaned up the bolster transitions with 280 grit. Found objects often work well for small sanding blocks, in this case I used a Bic pen tube. The perfect thing.

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Then I took a break and whipped up some fried rice for dinner. It was pretty darn tasty.

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That red eye is kinda freaky, huh?
 
I cleaned the entire blade in front of the bolster to 280, including the edge, spine, clip, and heel. I made sure that all 280 scratches run lengthwise. I convexed the edge just a little with the sanding bar, it’s at about 0.040 the entire length.

I applied the first layer of Satanite, as thin as possible.

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I added dips in the edge of the Satanite along the bevels, and ashi on both sides. I used a popsicle stick for the main clay and a razor blade for the ashi.

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I put an old welding rod through one of the tang holes, and suspended the blade inside my super sophisticated drying support on the stove. This only works with a GT Mustang coil spring.

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Now, while waiting, I’m preparing the forge area for yaki-ire.
 
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Carl, this sanding bar really helped me. Until recently I sanded all of my blades with a much smaller, wider micarta block. I held the paper around it.

The last big blade I did, I really got fed up. After sanding it to 1000, I could barely grip a pencil. So I built this. It took me about 10 min. or less. Smartest 10 min. I've put in for months. Now, instead of my forearms and thumb muscle tiring from gripping the dang paper, I can have a relaxed comfortable grip on both handles with no worry. Now when I get sore from sanding, it's in my shoulders. It takes a lot more work to do that, and I don't mind it nearly as much. Now I can get above my work and really lean down onto it to get the most out of my paper and calories burnt.

Also, the reduced width allows the paper to bite more aggressively, and since I don't have to hold onto the edges I can cut my paper more narrowly and thus get more mileage out of it.

Did I mention that I like this thing? It's great for smaller blades, too.
 
Thanks guys, Nathan. I just changed the name of the thread because as this knife progresses, it feels a lot more like a bowie/fighter in terms of balance and design. I didn't plan on grinding that swedge in when I started...
 
Great forging/grinder work. This looks like it will be a great WIP also. Can't wait to see it done!!!
 
Just went through yaki-ire. I use this term because I water quenched. Actually, warm water for a three count, then preheated oil.

I did not hear or feel a "ping" so I'm cautiously optimistic. I'll really do a dance if when I take it out of the oven after the temper cycles and shine it back up to do a quick etch to check it's still not cracked.

I got no sori to speak of, and it looks like the clay uniformly blew off the thin part that I wanted to harden. Appearance suggests that the hamon will approximate what I intended. I don't even think it warped significantly.

Of course, I may be whistling a different tune in four and a half hours. I'll keep you all posted.
 
Here, by the way, is what the blade looked like when dried on the stove. After this and before HT I stuck it in the oven at 450 F for an hour to make sure the clay would not pop off in the forge. That way, the oven was also preheated to 450 so the blade went right in after quench.

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