Swapping blades on Enduras.

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Aug 28, 2007
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I know I'm not the first to do this, but I thought I'd share my experience and impressions. I switched the blades between a flat-ground VG10/G10 Endura and a ZDP-189/FRN Endura. I am amazed at the results.

Concerning the original flat-ground ZDP blade in a G10 handle, I was surprised that Spyderco would put what I considered to be a more delicate blade into such a robust handle. One of the main points of the Endura 4 (pun intended) redesign was to provide a stronger point by dropping the tip.

Please don't get me wrong, the flat ground VG10 blade slices wonderfully, just like a high quality kitchen knife, but it's not what I would have expected to put in such a tough handle.

So, I took matters into my own hands and made the knife that I believe Spyderco should have made in the first place.

The G10 handled ZDP Endura has an entirely different feel now. It's a bit heavier and feels like a tank, yet it's still comfortable in my pocket and in my hand. The manufacturer's tolerances were tight and I worried a bit about the blade fitting, and I even tried to swap the lock bars along with the blades initially. That didn't work. The ZDP blade and lock bar from the FRN handle did not fit into the G10 handle at all, but the blades fit perfectly when I left the lock bars in their original handles and only swapped the blades. Though it's apparent that both knives come from different manufacturers, or are manufactured through different processes, the blades fit their respective new handles as if they were made for them.

The flat-ground VG10 blade in the FRN handle was a very pleasant surprise. It's very fast in the hand, has retained good balance, and practically disappears in my pocket. It's just a few grams heavier than a flat-saber ground Delica with FRN handle but with a longer broader blade. It's so light and comfortable to wear, I find myself carrying it a lot, especially when wearing shorts (I live in Southern California). It also makes a really good picnic knife since it's now like a folding kitchen knife.

So, I now have two entirely different knives. One that's as tough and robust a knife as I would wish for in a pocket knife, with super exotic steel, and another that is light and easy to carry, with a large thin blade that slices like no tomorrow.

Me very happy.
 
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Did you swap the lock bars, too?

Sorry, I meant to say "lock bars" when I said "springs". I've heard others say that you should swap the lock bars with the blades, and I tried that at first, but that didn't work at all. The blades measure practically identical in every way, but the lock bars are very different. The swapped blades fit perfectly when I left the original lock bars in place.
 
I remember stating Sal that the lock bars have to be about the same RC hardness as the blade, so none of them shows excessive wear too soon.

So the perfect partner for a blade swap with a G-10 FG Endura would be the "standard" black E4, not the ZDP one.... could be wrong, though.


Nevertheless, I hope that your "new" knives hold up fine. Have fun with your mods!


Dennis
 
I remember stating Sal that the lock bars have to be about the same RC hardness as the blade, so none of them shows excessive wear too soon.

That's interesting, because unless the ZDP Endura's lock bar is also made of ZDP, I find it hard to believe that it's as hard. Do you know if it's also ZDP-189? Are the lock bars on the standard Enduras VG-10?
 
That's interesting, because unless the ZDP Endura's lock bar is also made of ZDP, I find it hard to believe that it's as hard. Do you know if it's also ZDP-189? Are the lock bars on the standard Enduras VG-10?

I don't think it needs to be ZDP, the normal lockbar material should be capable of being hardened that far.
 
I don't think it needs to be ZDP, the normal lockbar material should be capable of being hardened that far.

I'm sure just about any steel can be hardened that far but most steels become very brittle at that hardness. The question is will any other steel be as tough and resiliant as ZDP is at that hardness. I'm not an expert, but my understanding is the thing that makes ZDP a "super" steel is it can be hardened to a high level of hardness and maintain toughness without suffering from the kind of brittleness that other steels exhibit.

Does the lock bar need to match that performance?
 
Short answer, no, the lock bar doesn't need to match that level.

Sure, it'll become brittle enough to be a problem if we were using that steel for a knife edge, but when you're talking about something that's as thick as a lock bar (as opposed to a knife edge, which tapers off to, well, nothing), the pressure placed on the lock bar is such that I don't think it matters whether the lockbar is ZDP or not. The knife edge has to withstand what comes out to be a rather large force on a very small area, while the lockbar has the luxury of spreading the force over a much greater area.

Edit: Note that I'm not saying that it is or isn't ZDP, only that I don't think it has to be ZDP. Logistically, since you already have a sheet of ZDP in the right thickness, it's possible that they'd use it for that reason.
 
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Any pics??
I did a swap with my ZDP-189 Endura, I wanted a black handle; so I swapped them around. Now I have a full serrated ZDP-189 Endura with a black handle. There is also a VG-10 green handle Endura out there also(I sold it).


Jason
 
I did the same with my Delicas not too long ago :)

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