CRK question about flipping open.

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Mar 26, 2016
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Hi all, I looked and searched for an answer but was unable to find out any info so I thought I'd ask here. I've collected knives for many years but recently purchased my first CRK, an Umnumzaan. I absolutely love the thing. The question I have is why I'm not supposed to flick/flip it open. Am I always supposed to open it slowly? Any info would be greatly appreciated. Thanks!

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IMO, if any knife is stout enough to flick open, it's a CRK. I personally don't sweat it, but I also don't sit there and flick it incessantly.

ETA: Never "wrist flick", just use enough to open smoothly.

Sweet Zaan! Welcome to BF!
 
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Don't think that model would be hurt by it. The O-Rings absorb the shock. On other models it can pound the stop pin. Also by flip it's normally wrist action that is talked about not a thumb flick.
 
After a good amount of practice, youll be able to thumb flick it open with a nice "thwack" sound.

Its not gonna mess anything up.
 
The main thing to avoid repetitive flicking(time after time). Any mechanical item only has so much use before it is worn out. You are wearing out the knife prematurely by doing this. They compared this to opening and slamming your car door over and over -eventually something breaks.
2nd avoid wrist flicks which cause a slamming of the parts together.
Other than that it should be fine. The CRK's are as durable as other knives, all knives will wear out prematurely when abused.
That's my take on it, from what I have read.
Of course you can do what you want with your knife, they just might not pay for it if they think it was abused-the chance you take.
 
Thanks for all the info. I appreciate it. It makes sense that simple thumb opening is cool but when you add in the wrist action the momentum causes more impact on the stop pin.
Thanks again and I'm glad to be a new member of the CRK and BF family! 👍

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Congratulations on a great new knife, and welcome!

Everyone here has covered the topic well -- incessant wrist flicking should be avoided, but if you can gently thumb it open without a ton of force, there should be no issue whatsoever.
 
Chris has posted up in the past lamenting the use of a knife in place of worry beads as the owner flicks and closes it repeatedly as if it were some form of OCD. This knife, and perhaps all others were not designed or built for 10s of thousands of cycles daily (yes, some people do it that much).

Some of us maintain that there is no reason, beyond gratuitous fascination, for flicking a life open over a controlled push that is equally quick when done properly. I think few could argue a functional reason for repeatedly flicking a knife open only to eventually put it away unused.

But, yeah, if you want to flick yours open, even with wrist action, go ahead, it is yours to do with as you approve. Just be aware that any moving part (be it a knife pivot/lock face, or crankshaft in a Ferrrari) is only going to cycle a finite number of times before it wears. It is generally best to stay within the designed use parameters...but it's up to you.
 
+1 on this^^^.

As well, I have seen people thumb open their knives just a little, then wrist-flick them as hard as they can. Seems they enjoy the loudest "thwack" they can manage doing that. :( That's a big reason I don't lend my knives out... ever.
 
Chris has posted up in the past lamenting the use of a knife in place of worry beads as the owner flicks and closes it repeatedly as if it were some form of OCD. This knife, and perhaps all others were not designed or built for 10s of thousands of cycles daily (yes, some people do it that much).

Some of us maintain that there is no reason, beyond gratuitous fascination, for flicking a life open over a controlled push that is equally quick when done properly. I think few could argue a functional reason for repeatedly flicking a knife open only to eventually put it away unused.

But, yeah, if you want to flick yours open, even with wrist action, go ahead, it is yours to do with as you approve. Just be aware that any moving part (be it a knife pivot/lock face, or crankshaft in a Ferrrari) is only going to cycle a finite number of times before it wears. It is generally best to stay within the designed use parameters...but it's up to you.

Chris Reeve also mentioned that if you send your knife in and there's excess wear on the stop pin (like flat spots) he will not replace that under warranty and he will charge you for the pin which is quite minimal, same thing with other parts, and I think it is totally fair, if I choose to flick it open and I do (I just like that sound when it's flicked open, I can do it just right so the blade swings open almost like slow motion and locks up) then I will be happy to pay for the stop pin when the time comes, or if I strip one of the screws or damaged one of the washers while taking it apart and putting them back together, it's my fault and I will own up to it and pay for the replacement parts. The cost that Chris Reeve charges for these parts are very reasonable and I don't think he is trying to make money off them.
 
I tried to slowly open my sebbie today (just wanted to see if I could break the habit of thumb flicking) and I cut myself. I don't know how, but for some reason my stupid self decided to throw my index finger at the blade. Totally my fault, but I am going to go back to thumb flicking until I can get control of my motor functions.
 
I thought i read somewhere that what Chris mentioned only applied to Wrist flicking - that thumbFlicking is fine.
 
Remember the OP has a Umnumzaan which does not have a single stop pin. Its more of dual stop pins that have o-rings to protect them and the frame. Some of the above posts are not directly applicable to the OP.
 
Remember the OP has a Umnumzaan which does not have a single stop pin. Its more of dual stop pins that have o-rings to protect them and the frame. Some of the above posts are not directly applicable to the OP.

You do realize that those o-rings offer about as much protection to the frame and pins as a helmet offers to a skydiver, right?

Regardless, use it as you see fit, but if you use it differently than Chris recommends, be a man or woman about it and own up to whose fault it is when things show wear after a couple million cycles.
 
You do realize that those o-rings offer about as much protection to the frame and pins as a helmet offers to a skydiver, right?

Regardless, use it as you see fit, but if you use it differently than Chris recommends, be a man or woman about it and own up to whose fault it is when things show wear after a couple million cycles.

Most knives of that design don't even have o-rings and people have not had issues with the frame or stop pins getting damaged. But its up to each owner to use as they want at their own risk.
 
Most knives of that design don't even have o-rings and people have not had issues with the frame or stop pins getting damaged. But its up to each owner to use as they want at their own risk.

It appears we agree :D
 
+1
I flick all my knife even the ones with nail nick, anyone says no I will punch his face. Don't tell me what I can and cannot do with my women lol


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What about flicking knives with ball bearings and such. They get wacked open all the time!
 
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