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Casted\pot metal....
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#1 (permalink)      2/11/2021 7:54:50 PM US Central   quote/reply + tips
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Skeeeets
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Casted\pot metal....
So I got some cheap* knives, one is a OEM and the other is a "knockoff" I assume is made in the same damn factory due to quality. Both the frames and blades have casting marks.... They have extra thick blades which seem to be hard to sharpen, but the knockoff actually came sharpened compared to the OEM I'm working on...


I'm to the point I believe they both are pot metal instead of cheap SS.... And I'm not sure if my efforts for a "sharp" knife are worth it. The OEM, I'm in the process of thinning out the blade profile to have a chance at getting a proper edge. I'm not touching the knockoff as I'm keeping it for "before and after" distinguishing.
Knock knock, let the devil in. Malevolent as I've ever been, head is spinnin'. This medicine's screamin', "L-l-l-let us in!"
#2 (permalink)      2/11/2021 8:41:53 PM US Central   quote/reply + tips
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Wylie
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Put a strong magnet to them, true stainless is only mildly magnetic/ferrous.

If you've heated the knives, or the factory did too extensively the chromium and carbon could have been "displaced" without proper tempering afterward this could cause the knives to not be able to take a good edge.

Edit: This is why stainless is so much harder to weld properly than other metals. I think it's just beyond 770F the S "Standard" stainless characteristics of anti-oxidation start to fade away.

And than you have S and L designations, L being the far more favorable for welding and brazing, S being Standard, not so much.
Edited on 2/11/2021 at 9:06 PM. Reason:
Always keep your ear to the ground!
#3 (permalink)      2/11/2021 9:58:38 PM US Central   quote/reply + tips
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The black one is the knockoff, that's the handle portion I assume is casted? Or am I wrong?

The OEM silver one had that badly on one side of the blade, which is the side I've been working on to thin the profile, so I have no photo for it.


Edit: yes, it's very magnetic... Fuck me. I guess it's only good for stabbing? Regardless I'm going to keep destroying this oem one lmao. Finish thinning the blade to a point and attempt to add serations.
Edited on 2/11/2021 at 10:02 PM. Reason:
Knock knock, let the devil in. Malevolent as I've ever been, head is spinnin'. This medicine's screamin', "L-l-l-let us in!"
#4 (permalink)      2/11/2021 10:02:40 PM US Central   quote/reply + tips
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Wylie
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Anybody making a call on that with pictures over the internet is taking out their ass.
Sure there may be some hints from texture and color but being painted there's no chance.
Always keep your ear to the ground!
#5 (permalink)      2/11/2021 10:04:58 PM US Central   quote/reply + tips
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If not casting, what could cause those pitted "boil" marks? The silver one had them badly which isn't painted, no discoloration.
Edited on 2/11/2021 at 10:06 PM. Reason:
Knock knock, let the devil in. Malevolent as I've ever been, head is spinnin'. This medicine's screamin', "L-l-l-let us in!"
#6 (permalink)      2/11/2021 10:06:18 PM US Central   quote/reply + tips
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Wylie
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 +1 details
Scaling?

You're that concerned with the handles? Without a good blade a knife isn't a good knife.
Edited on 2/11/2021 at 10:08 PM. Reason:
Always keep your ear to the ground!
#7 (permalink)      2/11/2021 10:07:32 PM US Central   quote/reply + tips
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Wylie wrote:

Scaling



I'm not familiar.... I don't know alot... What is that

Knock knock, let the devil in. Malevolent as I've ever been, head is spinnin'. This medicine's screamin', "L-l-l-let us in!"
#8 (permalink)      2/11/2021 10:10:34 PM US Central   quote/reply + tips
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Scaling video

Heating metals will cause them to scale, most metal forming processes involve heating the metal

Same reason we shouldn't heat our coils too hot.
Edited on 2/11/2021 at 10:22 PM. Reason:
Always keep your ear to the ground!
#9 (permalink)      2/11/2021 10:20:54 PM US Central   quote/reply + tips
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Very educational but somehow I'm not convinced it's just scaling.
Knock knock, let the devil in. Malevolent as I've ever been, head is spinnin'. This medicine's screamin', "L-l-l-let us in!"
#10 (permalink)      2/11/2021 10:23:29 PM US Central   quote/reply + tips
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Skeeeets wrote:

Very educational but somehow I'm not convinced it's just scaling.


Time is money in manufacturing, fine metal manufacturing takes far longer than half assing it.

Edit: 2 more minutes at most in skilled hands and you'd have never known that was there.

I'd guess that part was pressed and hole punched at the same time, scale build up in the die of the press or scale popping off from being stretched/bent would be my guess.

Edited on 2/11/2021 at 10:31 PM. Reason:
Always keep your ear to the ground!
#11 (permalink)      2/11/2021 10:43:49 PM US Central   quote/reply + tips
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Ahhhhhhhhh. Pressed. That makes perfect sense.


The portion of the frames that screws into the blades are definitely punched. The OEM one I'm in the process of replacing the oem screws and washers for a thicker nut and bolt, a tiny screw(s) similar to spares in our rtda bags holds the blade to the frames.... I had to drill out the holes in the one handle frame, haven't gotten to the second one.
Edited on 2/11/2021 at 10:50 PM. Reason:
Knock knock, let the devil in. Malevolent as I've ever been, head is spinnin'. This medicine's screamin', "L-l-l-let us in!"