90˚ Knife II "The Domestic"

[dedguy]

view vIII at post #8

i'm working up a second more refined design for a 90˚ knife right now. i'm dubbing it "The Domestic" as it seems to carry with it a sort of non threatening "tame" tone.

so far i've beefed up the tang portion of the blade, changed the lock from a front-lock to a compression lock, added a lanyard, and changed the forward thumb rest to blade integtral insted of handle.

any other suggestions off hand?
obviously very rough sketch, i must have drawn and erased some parts of it 10 times. the blade shape is open to discussion, i was thinking maybe a more bullnosed shape blade, like on the Jester. i don't know, may make it appear more threatening.

[uhiforgot]

Even since the last thread I've watched this knife evolve, and it is becoming more and more impressive. Let me reccomend, though, that there be a deeper belly on the blade. If cutting on a very flat surface, only a few millimeters of the blade (from the tip) will ever be able to contact what is being cut. The best way to demonstrate this is to envision the knife being set on a flat surface. There will be two points of contact: the "lowest" point of the butt, and a certain amount of the blade. (see attached image) Having a deeper belly on the blade would help out a lot even if it were to offer another quarter to half inch of usable flat surface edge.

Now, cutting INTO a flat surface is a different story, and it looks like it would be perfect!

I will keep a close eye on the continuing progress of this knife...

-Jeff

[yablanowitz]

Now you're cooking! :cool: UhIforgot has a good point on the belly/point, which has always been my biggest objection to a 90 knife for utility. If all you need it for is cutting up empty cardboard boxes, it should work OK, as long as you watch for friction burns on your knuckles.
He also had an excellent idea in his new Lava thread - make a mock up out of cardboard and see how it feels :D

[224477]

dedguy,

a couple of suggestions:
its not that best to post designs here, in case you are really interested for later submitting them to :spyder: R&D...

the knife looks interesting, but in case it has to be intended to be used as a kind of folding push knife/dagger, then it needs a more serious "guard". Just IMHO.

The feature behind the hole looks like an Emersons "wave". Its patented and quite sensible to be used even with a slight modification in shape. Is your "wave" intended to be one?

But, go on, every new design we have the pleasure to see here is a good one :)

[dedguy]

thanks for the suggestions...

224477:
i am not trying to get the knife made or anything, if it where to be picked up i wouldn't complain but i am by no means a professional knife designer and have never really deigned a knife before. this is just for fun.

the knife is NOT intended to be a push dagger but a utility knife based on the 90 model.
the portion on the spine of the blade is not ment to be a "wave" but a thumb rede for more aggresive controled cutting. i've already started to re-draw it to be less wave-like as i realized that's what it was starting to look like a "quick draw" additon to the iknife would be rather counter-purpose to it's design.

[224477]

thanks for the suggestions...

224477:
i am not trying to get the knife made or anything, if it where to be picked up i wouldn't complain but i am by no means a professional knife designer and have never really deigned a knife before. this is just for fun.

the knife is NOT intended to be a push dagger but a utility knife based on the 90 model.
the portion on the spine of the blade is not ment to be a "wave" but a thumb rede for more aggresive controled cutting. i've already started to re-draw it to be less wave-like as i realized that's what it was starting to look like a "quick draw" additon to the iknife would be rather counter-purpose to it's design.

dedguy,

I just wrote that because some of us are not professional knife designers either (Dialex, CLB) and you can buy a spyderco designed by them.
On this forum is the "never say never" twice so valid....

to the thumb "feature", on your first sketches it looked like a wave to me, I didnt mean anything as an offense, your design looks very interesting.

Where could a 90° angle knife be used, I mean for utility?

[dedguy]

224477:
zero offense taken. anywhere you would use a hawkbill i would think. pulling cuts mostly. someone had started a thread awile back calling for the design of a utilitarian 90 knife and it got me thinking.

as far as getting it made by Spyderco, who knows? at the very least posting the working design on here will help me work through problems (many of which without the help of forum members i would never have noticed). if i decide to make my own custom model one day (doubtful) the people here will have been a great help. this is less my design and more a colloberative design among the forum, i'm just drawing it.

uhiforgot:
THANKS i totally would not had noticed that till i made the cardboard template (i have planned for this already ) i have radically redesigned the blade shape and am much happier with it.

[dedguy]

v3


how we going so far? increased the curvature of the belly and overall sorta smootyhed out the design wrinkles.

[224477]

as far as getting it made by Spyderco, who knows? at the very least posting the working design on here will help me work through problems (many of which without the help of forum members i would never have noticed). if i decide to make my own custom model one day (doubtful) the people here will have been a great help. this is less my design and more a colloberative design among the forum, i'm just drawing it.

dedguy,

I dont think that ANYBODY from spyderco forumites could steal your design or idea. People here are very honourable and great personalities.

I mean that a lot of others may see it here, get inspired and produce something very close to your idea in some chinese province and sell it as (fill your knock off brand here) product.

Spyderco has a great policy to develope new models "in area 51", so we can see any new design only in case it will be till 6 months on the market.
Proto´s are held undercover, to prevent knocking the idea before :spyder: got a real product.
As you decide to post its development here, you are showing the red light to yourself (sorry my english in not that good today, I cant express what I wanna to, but I hope you got the point..)

[dedguy]

ah, i see what you mean... BUT i couldn't do this design any other way. this is the first functioning knife i have ever designed so i need input from people who know more than me in regards to knife mechanics. it's unfortunate that i leave myself open to intelectual theft but there's really no other way at the moment. now in the future if i design anything else (i have another idea for a knife already) i will keep it under wraps and perhaps submit it to spyderco.

[JD Spydo]

Very interesting :cool: This knife is somewhat resembles a Laci Szabo design known as the UUK Lightning. A knife that I admire very much by the way. IT's almost like a pragmatic, usable Karambit in a way. I hope this blade comes to fruition soon. :spyder:

[sierra]

who put up this idea week before last.
So you work at Spyderco - your second design looks 90% of the design I sent in the week before last...


If you take your second design and smooth out the top of the blade to look more like a Scimitar - you will be 90% of what I sent in to Spyderco friday before last. For this blade to function effectively - a very deep belly is required.Even our handle is very similar - although mine was a little thicker top-to-bottom. What you are calling a Wave - I had a more 'faired in thumb rest', utility in mind

Glad to see someone else sees the benefit and is experimenting. Your finger guard looks the same too - except I wanted to add a 'Cobra-like' hood the the finger/blade recession - just wide enough to provide user comfort - maybe twice the blade thickness there; having the clearances cut into the handle/liner to accomodate the thickness.

wish you had stayed on the same thread to centralize the proliferation of the idea though- - but maybe multiple threads will get the idea more mainstream...now to get one made by Sals group!!

I just sent my desing in as I am not looking for ANY compensation - I just like the idea and thought any knife nut who thought about it seriously for awhile might see the potential I see.

[dedguy]

so should i got ahead and stop design of this knife and move on?

[Mr Blonde]

I really like the first sketch in this thread, with a little less belly than your second sketch, in this thread. From this point, I'd think a wood/plastic proto is in order. :cool:

Wouter

[sierra]

keep on keeping on!

I just want to get it built by Spyderco!
Sal will do it right - if you sees that there are folks like us with interest!

You are doing a great job - can you make a copy with the last drawing to take off the top edge to see how that looks? The more ideas and prototypes out there the better..
I am not chasing a copyright or anything else - mine is the love of the idea - and you are doing a great job.

All I ask is for a G-10 handle.

[Joe Talmadge]

I just went back and read the initial string. Love the concept, really nice thinking. I think the biggest weak point in how you've realized the concept overall is how gargantuan the knife is when closed, and how terribly uncomfortable it will be to carry. That to me seems like an instant deal-killer. It was, BTW, one of the big complaints on the Gunting, so I wouldn't approach the area of carryability lightly. I'd suggest making some compromises on other design features in order to make the knife leaner and carryable.

Joe

[sierra]

When I look at my sketchs and dedguys - I don't see that the folded article is taller that any hawkbill.

I don't know how to put a sketch here yet - can you illustrate what you are thinking?

[dedguy]

I just went back and read the initial string. Love the concept, really nice thinking. I think the biggest weak point in how you've realized the concept overall is how gargantuan the knife is when closed, and how terribly uncomfortable it will be to carry. That to me seems like an instant deal-killer. It was, BTW, one of the big complaints on the Gunting, so I wouldn't approach the area of carryability lightly. I'd suggest making some compromises on other design features in order to make the knife leaner and carryable.

Joe

i understand what you mean and that was part of my thinking in scooping the top of the blade in the vIII sketch (which i have yet to do a closed version of).

[sierra]

I did not have the leaf-patterned blade in mind at all; I was focussing on your 3rd blade, and the scimitar shape I sent in. I can see where the leaf pattern would make it taller..

So - Joe - -you have been around a long while.... got any ideas you can add to a design to make it more marketable?? :o

[Rob]

Dedguy, your knife seems like a nice idea. It sure does not look very common. I'd only suggest that you rethink the handle. Otherwise it won't work properly or it would not look very nice when it's closed. To illustrate what I mean, I've attached a little sketch based on your drawing. Not perfect, because I didn't take time to do it perfectly but the measurments are taken from what you've posted, and so are the hole sizes.

Don't get me wrong, designing a folder is hard work and sometimes a little bit difficult - that's one thing I know very well :rolleyes: I Just wanted to add my 2 cents on something that might have been overlooked.

Cheers, Rob