New Maringer Vorpal Haiku Ti Fighter, rubber grip

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Mar 26, 2000
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Here's another new "Vorpal Haiku Fighter", (serial #918), It has all titanium furniture and rubber-wrapped grip. This is my second foray into using titanium for the furniture and also my second try at a rubber grip. The inspiration for this handle treatment was a knife made by W.W. Cronk in the 1970s and which has circulated in the custom knife community since then. I saw it once at a Guild show in KC, and again at a knife show last year. I'm not certain (are there any Cronk experts here?) but I think that he only made the one with that rubber-grip handle, at least it's the only one I've ever seen. And again, to my knowledge nobody else has ever expanded on that original Cronk idea since. But... after almost thirty years of that darn thing niggling at my brain, I do believe that I have finally figured out how he did it! I'm very excited about this "new" handle treatment as it seems to be both highly practical and quite attractive.

This knife features seven titanium plates in the guard stack, together forming a guard that flares both up from the blade and back down to the handle. There are also three titanium plates in front of the pommel, mirroring the effect at the guard. The handle has titanium end collars and one middle collar offset towards the front end, giving solid seating into the rubber sections for both first and second fingers in any grip mode. The entire knife disassembles into 17 separate pieces via the toggle-tang construction, a sort of modified Japanese tang system I originally developed for making swords. The 17 pieces suggested the "haiku" name, since there are 17 syllables in a haiku poem. All the plates or "spacers" are marked with a sequence number for reassembly; the odd numbered spacers having filed "reeding" on the edges while the even numbered parts are all smooth edged. All the metal parts that show (except the blade of course) are titanium. All are CP (commercially pure, 99.7% Ti) except for the pommel and the screw, which are 6-4 (90% Ti, 6% Al, 4% V). All the titanium parts have been polished, stonewashed, and anodized a deep violet color that sits well with the matte black of the rubber. The D-2 steel blade has a stonewashed matte finish, and the knife is supplied with a kydex fast-draw scabbard and a shoulder rig of the style I developed for my Vorpal knife series years ago.

The toggle on this one is aircraft aluminum for lightness. The handle core is laminated bamboo. Total knife weight is just 6.3 oz. I'll post a few WIP pics as well as some of the finished piece and various stages of takedown and reassembly, which can be safely done by the owner.

In case you're curious about the serial numbers, it's a continuous series since the first knife I ever put my name on in 1975. I have a complete archival webpage with a serial number list here: http://www.shirepost.com/BladeList.html which has been recently updated to include the most recent knives.
 

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A few more pics....
 

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Thanks for the sharing the photos, but you are just getting me wanting one of your knives even more than I did before. This one is fabulous.
 
I borrowed the photo of this knife to use as my avatar. Tom, please let me know if you have a problem with me doing that.
 
I borrowed the photo of this knife to use as my avatar. Tom, please let me know if you have a problem with me doing that.

:thumbup: Hi Keith. That's fine! I am humbled.

Here's some others to choose from! :D
 

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Oh man! You just made my month:D
That knife is simply one of the most awesome knives I've ever seen.
Anyone who geeks out on folding knives and mechanisms should take a look at this knife. It could turn any folder enthusiast into a straight knife lover!
 
Rubber or some sort of urethane?

What kind of testing have you done to ensure long-term(20 year +) stability?

The materials exist to ensure this, I have a rifle sling that has over 10 years of weather testing of the material, called Biothane, by the producer:

http://www.turnersling.com/miva/mer...ode=TS&Product_Code=NMSRAWS&Category_Code=PTS

This stuff is important to the collector or the user looking to make a wise purchasing decision.

Best Regards,

STeven Garsson
 
Something about your knives, Tom. :cool:
This one as well as the others I've had the pleasure of viewing. :thumbup::thumbup:

Doug
 
WOW!! You are making ME want one of your knives quite badly!!

And you owe me a laptop, as I just killed mine with drool.
 
I'm not into "tactical" knives that much, but I like this one a lot...really a lot.

Marcel
 
Rubber or some sort of urethane?
What kind of testing have you done to ensure long-term(20 year +) stability?
The materials exist to ensure this, I have a rifle sling that has over 10 years of weather testing of the material, called Biothane, by the producer:
http://www.turnersling.com/miva/mer...ode=TS&Product_Code=NMSRAWS&Category_Code=PTS This stuff is important to the collector or the user looking to make a wise purchasing decision. Best Regards, STeven Garsson


Hi Steven! Good questions! Since it's a new material both to me as well as to knives (with one exception as explained below) it may take some time to answer all the possible issues. At the very least, it is replaceable and as long as I'm still kicking I'll replace the rubber free for the life of the original owner if anything goes wrong with it. If the rubber is cut or otherwise damaged the knife is still useable until repaired. I've done some basic field tests of using the knife hard and trying to tear it up... appears stable in hard use at least in the short term. But 20+ years??? That's tough! I'm not sure how to test for that! Time will tell I suppose and we'll see how many I need to replace. It was a similar situation when I originally introduced thermoformed Kydex sheaths to the knife community in 1982. How long would they last? Would they crack from fatigue? Would they lose grip on the knife in extreme heat? What about sunlight exposure? I could not answer all those questions except by reference to manufacturer's specs. But time told the story on that one. Out of some six hundred or more kydex sheaths I think I've only replaced six... three of those were because the sheaths were lost, and two were fastener failures. Only one was an actual cracked sheath, and I was able to trace that down to overheating and got a different oven with better temperature controls. Lots of other folks have put a LOT of kydex in service since then too... I have no idea how many tens or perhaps even hundreds of thousands of Kydex sheaths are in service now, but the real-world has shown that even if it has a couple drawbacks when compared to leather... it works.

But back to the rubber grip, I think this may be in that same category as Kydex was in the early days. It's untested, but appears to be very practical and with properties that lend itself to the application. While there are some tricks to it (as there are with Kydex) the technique is quite accessible and could conceivably catch on. It's not completely original though, but rather a rediscovery of prior art. As mentioned earlier, I got the idea from a 1970s vintage W.W. Cronk knife that I saw way back when and then again last year. It has probably stayed in collections and not been used... but looks just as good now as it ever did (see pic of it), so that shows that the material he picked is at least stable in a collection over 20+ years. Of course I don't know for certain the specific material he chose for that one, and there are several material choices available, but I made a best-guess based on some research into similar material that are out there. The stuff I picked to put on this knife is nitrile, known commercially by trade-names Buna-N or NBR, a copolymer of Butadiene and Acrylonitrile. The manuafacturer gives it a working temperature range of -40F to +250F and explains that it is exceptionally resistant to petroleum base oils and hydrocarbon fuels. Nitrile materials also exhibit high tensile strength and abrasion resistance properties. The material resists breakdown by most dilute acids, silicone oils and lubricants and does well in wet applications. It is not recommended for exposure to ketones, aromatic hydrocarbons or phosphate ester type hydraulic fluids. Beyond that it will just take some time to see how it does. Will it last? I think so and I'll stand behind it and replace it if necessary. It's possible it could get brittle in extremely cold artic conditions... colder than forty below. You can cut it or abrade it... but if you don't go slashing at the handle with another knife, dipping it in liquid nitrogen, or dragging it along on pavement it should do pretty good. Time will tell!
 

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Thank you for your information, Sir......another Masterpiece you have created for us to gaze at and drool over. :D
 
Amazing work Tom. I am really looking forward to seeing what you will have at Blade. Beautiful details and construction. Thank you for sharing.

Brion
 
That is really impressive in all respects. I look forward to seeing your table at Blade.

Roger
 
Tom, I forgot to ask earlier what the specs are for this knife. You provided the weight, but I would appreciate the dimensions as well.
 
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